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Interserve plc
Public limited company
Traded asLSEIRV
IndustryInfrastructure - professional services, construction services, support services, construction equipment hire and sale
PredecessorTilbury Douglas plc
Tilbury Group plc
R M Douglas Holdings
Area served
Key people
Glyn Barker, Chairman
Debbie White, CEO
ProductsFormwork Systems, Joinery products
Revenue£3,250.8 million (2017)[1]
£(224.8) million (2017)[1]
£(254.4) million (2017)[1]
Number of employees
74,000 (2018)[2]
Subsidiariessee Operations

Interserve plc is a multinational support services and construction company based in the UK, with a revenue of £3.25 billion in 2017 and a workforce of more than 75,000 people worldwide.[3] The company is headquartered in Reading, Berkshire and is listed on the London Stock Exchange.

The company was founded in 1884 as the London and Tilbury Lighterage Company Limited, and retained the Tilbury name until 2001. From 1991 it was known as Tilbury Douglas following a merger with RM Douglas, but in 2001 rebranded as Interserve plc. The name change partly reflected a shift in focus during the 1990s towards maintenance and facilities management services sectors, and this continued in the 2000s, buoyed by further acquisitions.

However, financial issues including problem contracts in Interserve's energy-from-waste (EfW) business led to profit warnings in 2017. The company was forced to restructure and refinance in early 2018, and, as its financial situation worsened, its debt holders started planning a further financial restructuring of the business in December 2018.


Early history – 1884 to 1930s[edit]


Interserve traces its origins to 1884, when the London and Tilbury Lighterage Company Limited (LTLD) was formed to transfer goods by sailing barge to and from ships on the River Thames, London, England.[4] A lighterage is the fee paid for the use of a Lighter,[5] a large, open, flat bottomed barge, that could transport goods a short distance in shallow waters.[6] At the time London was the busiest port in the world.[7] Lightering provided a service much in demand in the overcrowded river because of the need to transship goods from ships berthed there and to convey them to the riverside wharves, where the larger open water cargo ships were unable to dock due to their size and draft or, to more efficiently and effectively deal with the number of ships congregating in the river.[8] By 1887 the company is recorded as occupying premises of a former Lloyd's Register Proving House and Chain-Testing Shed and subsequent Police Station at Preston Road, West India Docks.[9]

In 1888 the company expanded into dredging, where mechanisation led to greatly improved productivity, and secured a contract with the Port of London (PLA) to remove dredged ballast.[4] This new venture was complementary to the existing business, utilising the barges already owned by the company, together with their knowledge of the river and its tides. There was a further synergy between lightering and dredging; lightering was necessary where ports were shallow and the draft of a vessel needed to be reduced to facilitate their entry into port, whereas dredging increased the depth of river channels to enable vessels with a larger draft to berth into port. The company’s move into dredging therefore protected its commercial interest against the perceived threat to lightering. This can be seen vindicated by the decline in lighterage for dry bulk cargo after the middle of the 20th century, although the eventual decline in lighterage was caused by the adoption of road haulage as the main distribution method when London's docks moved downstream (away from what is now known as Docklands) and shipping adopted containerisation methods.[10] However, for the time being lightering still thrived and the New Zealand-based Ashburton Guardian reported in 1890 that the company was an early pioneer in the transshipment of frozen meat. The newspaper noted that their capabilities for handling this cargo had been highlighted during a trip, organized for delegates at the International Congress on Inland Navigation, to inspect the company's custom built vessels complete with cold chambers that enabled the meat to arrive at Smithfield Market frozen.[11]

Name changes and international presence[edit]

The company changed its name several times over the next few years; in 1896 to The London and Tilbury Lighterage Contracting and Dredging Company Limited, in 1904 to the Tilbury Contracting and Dredging Company Limited, then in 1906 to Tilbury Contracting and Dredging Company (1906) Limited, before In 1908 reverting to Tilbury Contracting and Dredging Company Limited (TCDC), a name it settled on for the following 56 years.[4] These were not the only changes experienced by the business, for the advance of technology meant that the firm's sailing barges were becoming obsolete by the advent of steam tugs, and the Company commissioned the new tugs to be built.[12] As the company grew, so did its profile and it came to be frequently featured in the pages of The Engineer. Mention is made in 1907 of the role played by its dredging craft in widening and deepening the navigation channel of the River Clyde to assist the maiden voyage of RMS Lusitania, then the worlds biggest ship.[13] A further example was reported on 9 June 1911[14] which in an article about major dredging works to the River Loire around the port of Nantes, France, noted that the company "had a special dredger constructed for the purpose". This contract is noteworthy as it comprised, at commencement, a three-year undertaking to form a new river bed to divert the course of the river, as well as removing islands and sand banks. A total of 10 million cubic metres of material was to be dredged as part of these £1,000,000.00[13] (2013 = £92.5M[15]) works. On 9 December 1911 Singaporean newspaper The Weekly Sun reported that TCDC "the well-known dredging contractors of London, have entered into a contract…for the formation of a port known as Port Argentine" involving the dredging of 16 million cubic metres to form an approach channel some 9.5 miles long in the Buenos Aires province.[16] During this period the company also carried out dredging projects in Canada, Egypt and Denmark.[17]

World War I service[edit]

A number of the company’s vessels were requisitioned for war duties during World War I where they took part in various military campaigns including in the Dardanelles, Archangel and the Persian Gulf.[12] Company tug 'Danube' was transferred to Admiralty control and assisted a monitor through the Mediterranean en route to the Rufiji River delta, in present-day Tanzania, in order to destroy the German raider Konigsberg.[12]

Exit from lighterage[edit]

Lightering gradually declined due to the increase of road traffic, and dredging became the mainstay of the company.[18] In addition to its dredging contract with the PLA, TCDC secured many other contracts including, between 1923 and 1927, the deepening and on going maintenance of the depth of the navigation channel and tidal harbour at the Port of Aberdeen [19] 1932 saw the firm begin work on a new harbour at Haifa in British Mandate Territory of Palestine that was completed in 1934.[20] In 1938 the company’s lighterage fleet was amalgamated with vessels owned by W H J Alexander Limited and Tate and Lyle Limited to form Silvertown Services Limited[12] and TCDC severed its links with its original business activity.[4]

World War II service - 1940 to 1945[edit]

As in World War I, many of the company's fleet of tugs were requisitioned for active service during World War II. These initially came under the control of the Royal Navy examination service,[12] where they were used to patrol harbour and river entrances. The role of the examination service crews was to board all merchant ships and trawlers entering ports or rivers, scrutinise their papers and if need be to search these craft for evidence of intent to help the enemy.[21]

Operation Dynamo[edit]

Although the company had disposed of its lighterage fleet, it retained craft for its dredging activities. It was these vessels,[12] its tugs and barges, that were represented within the merchant marine fleet that took part in Operation Dynamo, commonly known as the Dunkirk Evacuation during World War II, when in late May and early June 1940 a flotilla of 700 ships and boats assisted in the rescue and repatriation of the British Expeditionary Force (BEF) and French troops.[22] Amongst this fleet of ships and boats was the company's dredger 'Gallions Reach', originally built in 1936 as a steam hopper, but converted at the outbreak of war to a salvage vessel,[23] this vessel rescued 123 men from the beaches and returned them to England.[24]

Operation Neptune[edit]

On 6 June 1944 Company tug 'Danube VI', under COTUG (Control Tug Operation),[25] participated in Operation Neptune, the D-Day invasion of Normandy, known as the Normandy landings by towing the 'Phoenix' (mulberry harbour breakwater units) and 'Whale' (floating roadway units that connected the mulberry harbour pier heads to the landing beaches),[26] as well as ammunition barges from Littlehampton across the English Channel to the Normandy beachhead.[12]

Operation Pluto[edit]

Company tug 'Danube V' took part in pipelaying activities during July 1944, as part of Operation Pluto,[12] which brought together; British scientists, oil companies and the Armed Forces in the construction of undersea oil pipelines under the English Channel between England and France to transport fuel supplies to Allied forces on the European continent.

Post war to Stock Market listing - 1946 to 1960s[edit]

As the UK sought to rebuild infrastructure after the Second World War, the company established a civil engineering capability in the 1940s to participate in this activity; together with building these had become the company’s focus by the 1960s.[18] In 1964 the Port of London Authority dredging contract ended, 76 years after it was first awarded, and the company ceased to operate as a dredging contractor in the UK.[4] In 1965 the remaining fleet of dredging vessels was sold to Westminster Dredging Company Limited.[12] The company, by then named Tilbury Contracting Group Limited,[4] applied for admission of its shares onto the London Stock Exchange and trading commenced on 12 October 1966.[18]

Acquisition of R M Douglas Holdings and expansion into the Middle East – 1990s[edit]

In 1991 Tilbury acquired RM Douglas, another construction and civil engineering business, the combined business becoming known as Tilbury Douglas.[4] Although both groups had a UK-wide presence, the rationale of the acquisition was that the two companies complemented each other. Tilbury Group was headquartered in Reading and predominantly involved in building work in the South of England and in Scotland, while R M Douglas was headquartered in Birmingham and its strongest regional presence was in the Midlands and the North of England with a strong bias towards civil engineering projects.

In common with many major national and regional contractors in the post-war period, R M Douglas successfully bid for work in the construction of airfields and motorways where it completed the following projects as part of the UK’s motorway building era in the 1960s, 1970s and 1980s:

  • M1[27] - Jct 18 to 30 (Kirby Muxloe – Whetstone) and Jct 18 to 30 (Nuthall – Sandiacre),
  • M4[28] - East of Jct37(A48) to Jct39 (Pyle by-pass) and J44 to J46 (Morriston by-pass),[29]
  • M40[30] - Jct13 to Jct15 (Warwick South) and Jct12 to Jct13 (Gaydon),
  • M42[31] - Jct1 to Jct2 (Lickey End to Alvechurch) and Jct4 to Jct8 (Solihull Section),[32]
  • M50,[33]
  • M54[34] - Jct1 to Jct3 (Donington section),
  • M6[35] - Jct7 to Jct8 (Rayhall to Great Barr), North of Jct6 to Jct7 (Great Barr to Perry Bar) and advance river works for Gravelly Hill Interchange colloquially known as Spaghetti Junction,
  • A38(M)[36] - Tower Road to Inner Ring Road (Lancaster Circus).

The acquisition of Douglas also brought with it the construction equipment company Rapid Metal Developments (RMD) a formwork and falsework manufacturer, together with joint ventures in Oman (Douglas OHI)[37] and United Arab Emirates (Khansaheb),[38] both of which were initially established by Douglas in 1981.[4] This expanded the geographical coverage of the company to the Middle East and this presence was further strengthened by the establishment of a joint venture in Qatar (Gulf Contracting Company).[39]

Diversification and name change - late 1990s and early 2000s[edit]

A series of acquisitions and disposals in the late 1990s and 2000 moved the group's focus away from property development and housebuilding, as it sought to build presence in the maintenance and facilities management sectors, though it retained a strong presence in traditional construction contracting. Acquisitions included electrical engineering contractor J R Williams in 1997,[40] the facilities management and engineering services business How Group purchased for £46m in 1998,[41] the £75m takeover of industrial and equipment services specialist Bandt Group in 1999[42] and, in a £75m purchase, facilities management company Building and Property, responsible for providing accommodation and property services to government departments.[43]

During this period the company disposed of its Scottish housebuilding business to Persimmon plc, diminishing the significance of revenues from traditional construction contracting workstreams,[44] with the newly diversified group now earning significant revenue through its facilities management and maintenance capability, which are otherwise known as support services provision.[4] To reflect this change in the company's business profile, it successfully applied in 2000 to the London Stock Exchange to relinquish its listing within the construction sector of the market, but to re-list within the support services sector on the FTSE market list.[4][45] To reflect this change it renamed itself Interserve in 2001.[4]

Acquisition of MacLellan and Madina Group – 2000s[edit]

On 2 May 2006 Interserve acquired MacLellan, another support services business for £118m.[46][47] After re-structuring to accommodate the acquisition,[48] Interserve announced it had discovered accounting irregularities in its Industrial Services business - an announcement that saw its share price fell by 14%.[49] This decline led to threats of legal action by former MacLellan shareholders, who had accepted shares in Interserve as part of the acquisition and saw the value of their holdings dramatically drop.[50] The company was also forced to delay the official publication of its interim results to investors, so as "to verify the adjustment needed" as it sought to reconcile the misstatements.[51]

In 2007 the group acquired a 49% stake in the Qatar-based Madina Group.[4][52] In 2008 Interserve expanded into markets in Abu Dhabi and Northern Europe.[4]

Further acquisition activity – 2010s[edit]

Interserve announced in November 2010 that it had acquired the US formwork and shoring business CMC Construction Services in a deal worth £22 million.[53] On 25 February 2011 the company emerged as a bidder for fellow support services provider, Mouchel, as Interserve aimed to "target the rapidly growing market for fully integrated outsourcing services." Interserve had approached the target with an offer believed to be in the region of £191m, or 170p per share; Mouchel had previously rejected two bids from Costain.[54][55][56][57] However, after conducting due diligence on the consulting group, Interserve reduced its indicative offer to a reported £151m, or 135p per share, and this was subsequently rejected. Interserve did not progress the bid and no formal offer was tabled.[58][59][60]

On 4 May 2012 the company acquired "Welfare-to-work" provider Business Employment Services Training (BEST), a UK provider of training and development for job-seekers and employers.[61] Then on 12 October 2012 Interserve announced that it had sold its stakes in some UK private finance initiative hospitals, schools and prisons for £90m. Dalmore Capital Fund, a UK infrastructure fund, agreed to buy 19 of the PFI investments, which generated £4.6m profits for the group in 2011. The Financial Times reported the sale as including "the stakes are five in hospitals – including University College London, Carlisle and Newcastle – five in schools, two in prisons and several in defence establishments.’[62][63] On 18 December 2012 it was announced that the company had acquired Advantage Healthcare, a leading UK provider of healthcare at home services for £26.5m in cash.[64] Then on 7 January 2013 the organisation announced the acquisition of The Oman Construction Company for a cash consideration of $34.1m.[65]

On 28 February 2014, the company acquired Initial Facilities from Rentokil Initial for £250m.[66]

2017-2018 financial difficulties[edit]

On 14 September 2017, Interserve reported additional costs associated with quitting the energy-from-waste (EfW) sector. In February 2017, these costs were revised from £70m to £160m; in September 2017, the figure had risen "significantly" but no new estimate was given[67] (in March 2018, the developer of a Glasgow EfW plant said it was in "ongoing" discussions with Interserve after costs rose by £95m to £250m, with Viridor contractually entitled to recover incremental costs from Interserve.)[68] The company's lenders, including HSBC and Royal Bank of Scotland, called in accountants EY to advise,[67] while the company appointed a new finance director, Mark Whiteling,[69] to work alongside Debbie White, CEO from 1 September 2017.[70] On 19 October 2017, the firm was reported to be "battling for survival" after warning it would breach bank loan covenants,[71][72] news that caused its shares to slump 38% to 55p, valuing the company at just £80m,[71] before recovering to close at 65p.[73]

On 20 October 2017, the Telegraph reported that the company had been awarded a £227 million contract to provide facilities management services to the Department for Work and Pensions.[74] On 13 November 2017, it was reported that Interserve was to axe 200 jobs in a cost-cutting drive;[75] further job losses were also expected.[76]

On 14 December 2017, it was reported that Interserve had secured £180m in short-term funding from its banks and had pushed back the test date for compliance with loan covenants to March 2018.[77] Interserve also appointed a rescue specialist, Scott Millar, as chief restructuring officer.[78] On 10 January 2018, Interserve warned that its debt was set to rise above £513m at the year-end due to redundancy costs and cash outflows from its legacy EfW projects.[79] Following the 15 January 2018 collapse of Carillion, the Financial Times reported Interserve was being monitored by the UK Government;[80] the report led to an initial 15% drop in Interserve's share price, later largely recouped - a market analyst said: "in the case of Interserve the arithmetic doesn't look anything like as bad as Carillion".[81] Market uncertainty following Carillion's liquidation continued, partly fuelled by a 30 January profits warning by Capita, after which Interserve's share price dropped nearly 20%.[82]

On 12 February 2018, accountancy firm Deloitte was drafted in advise ministers on public sector contracts held by Interserve.[83] On 21 February 2018, Interserve announced it was closing its power lines business, putting more than 70 staff at risk of redundancy.[84] Three days later, Interserve was reported to be struggling to agree a debt refinancing deal because Carillion's liquidation had spooked lenders,[85] but Interserve denied the talks had stumbled.[86] On 26 February 2018, Interserve's share price fell 12% to close at 57p.[87] On 3 March 2018, it was reported that Emerald Investment Partners, the family firm of Punch Taverns founder Alan McIntosh had acquired £140m of Interserve debts on secondary markets in a bid to save the company.[88][89] Interserve was reported to have cut 500 administrative staff in the last quarter and to be planning a further 1,000 job losses by the end of 2018.[90] On 8 March 2018, a series of equity swap deals bolstered Interserve's share price;[91] the following day Interserve put its stake in the £200m Haymarket development in Edinburgh up for sale to help reduce its near £600m debts.[92]

On 21 March 2018 Interserve announced it had agreed commercial terms with its main bankers for extra cash facilities of £197m and fresh bonding facilities up to £95m.[93] Lenders agreed a further 30-day extension for completion of the refinancing paperwork[94] (concluded on 27 April 2018).[95] The refinancing news drove its shares up almost 26% to 87.9p.[96] However, the share price tumbled 13% in early trading on 30 April after Interserve reported a £244m loss for 2017, with debts almost doubled from £274m to £502.6m; analysts anticipated a possible sell-off of Interserve's international support services and construction divisions.[95] On 11 May 2018, Interserve said it would be investigated by the Financial Conduct Authority with regard to handling of inside information and market disclosures regarding its EfW business.[97] On 31 May 2018, the operator of the Glasgow EfW scheme claimed Interserve owed £69m in additional costs;[98] in November 2018, Viridor said it expected to receive at least £64m from Interserve.[99]

Interserve reported its half-year results on 7 August 2018. These showed a pre-tax loss of £6m, said 470 jobs were lost, and showed revenue dipping to £1,488m from £1,647m. Legacy EfW contracts dragged results down, but Interserve aimed to complete and hand over problem EfW contracts by the end of 2018. The business suffered a £6.6m loss from exiting the London construction business, and incurred £10.8m in restructuring costs and £32.1m in 'professional adviser fees' in connection with its refinancing. Net debt at 30 June was £614.3m, with Interserve expected to pay £80m in interest costs in 2018.[100]

On 13 November 2018, concerns about an EfW project in Derby led to a 30% slide to a 34-year low (29p) in Interserve's share price,[101] though it later ended down just 10% on the day.[102] A critic blamed its problems on ill-timed acquisitions, expansion into areas (probation, healthcare, EfW) where it had no experience, and a weak balance sheet (of £427.4m intangibles on its balance sheet, £372.9m was goodwill).[103] In a 23 November 2018 trading update, CEO Debbie White said the group would unveil plans to tackle its debt mountain in early 2019 after revealing year-end net debt would be worse than expected, up to £625m-£650m due to additional cash outflows on EfW projects and slow payments in Middle Eastern markets.[104] The news pushed down shares 9% (closing at 33p),[105] and there was further pressure on 26 November when West Yorkshire Police said it would be seeking compensation for faults in construction of custody suites in Leeds and Wakefield.[106] Interserve shares closed on 30 November 2018 down 6.5% at 28p.[107] The share price slide continued into December (closing at 21p on 4 December), after, in Building, Specialist Engineering Contractors Group CEO Rudi Klein advised members not to work for Interserve if possible.[108][109]

On 7 December 2018, Interserve was reported to be in rescue refinancing talks, with banks and other debt holders (including RBS, HSBC, BNP Paribas, Emerald Asset Management and Davidson Kempner Capital) preparing to incur losses as part of a debt-for-equity swap that would see public shareholders virtually wiped out.[110][111] On 10 December, Interserve confirmed its deleveraging plan could result in "material dilution" for current Interserve shareholders,[112] and shares dived 65% in early trading,[113] eventually closing 53% down at 11.5p.[114] Fearing problems similar to those faced by clients after Carillion collapsed, the Labour Party urged the Government to bar Interserve from bidding for public contracts,[115] but a senior Cabinet Office civil servant insisted Interserve was different to Carillion.[116] Meanwhile, Interserve announced a £25m contract win at a Welsh hospital.[117]


Interserve Plc is a support services and construction company.[3] Through its subsidiaries, it is involved in all stages of the life cycle of infrastructure and the built environment.

The company offers advice, design, construction, equipment and facilities management services for infrastructure. It operates in the outsourced services and construction markets in the United Kingdom and worldwide.[3]

The company operates in a range of sectors, which include aviation, central government, commercial offices, defence, education, energy and water utilities, health, highways, industrial, justice, leisure, local government, marine/rivers, regeneration, retail, waste and welfare to work services[3]

Interserve provides a range of support services across the transport sector.

The company’s businesses are arranged into the following operating divisions (with principal subsidiaries) and service provision:

Professional Services[edit]

(Interserve Consulting) - Programme management, cost management and project management, CDM (Construction (Design and Management)) co-ordination, healthcare planning, sustainability and energy management.[118]

Construction Services[edit]

(Interserve Construction, Interserve Engineering Services, RMD Kwikform) - Design and construction for building, mechanical and electrical installation, formwork and falsework, shopfitting and interior fit-out, civil engineering, water treatment and waste.[118]

Support Services[edit]

(Interservefm, Interserve Defence, Interserve Industrial Services, MacLellan International) - Facilities management and business services outsourcing.[118] The company provides facilities in Private finance initiative developments in the National Health Service.


(Interserve Investments) - Operates a portfolio of private finance initiative concessions in the UK, primarily in the custodial, defence, education, health and waste sectors.[118]

- Operates a 50%/50% joint venture called Rehab Jobfit within the welfare to work market as a deliverer of the government's Work Programme.[119]

Financial information[edit]

Financial information for the company is as follows:[120][121][122][123][124][125][126]

Annual results[edit]

Revenue (£ million) Profit/(loss) before tax (£m) Net profit/(loss) (£m) Earnings per share (p)
31 Dec 2017 3,250.8 (244.4) (254.4) (176.0)
31 Dec 2016 3,244.6 (94.1) (101.6) (71.2)
31 Dec 2015 3,204.6 79.5 70.2 67.9
31 Dec 2014 3,305.3 106.2 49.9 32.2
31 Dec 2013 2,192.6 68.1 55.0 47.7
31 Dec 2012 2,369.6 184.9 171.7 129.3
31 Dec 2011 2,319.6 68.1 60.6 44.7
31 Dec 2010 2,315.4 68.9 53.5 38.5
31 Dec 2009 1,906.8 96.6 72.4 53.7
31 Dec 2008 1,800.0 82.7 57.7 42.7
31 Dec 2007 1,738.0 69.2 49.4 36.9
31 Dec 2006 1,408.5 13.2 1.1 (1.3)
31 Dec 2005[a] 1,214.5 37.2 24.3 18.9
31 Dec 2004[a] 1,223.0 14.6 11.6 14.1
31 Dec 2003 1,211.1 22.5 (7.3) (7.0)
31 Dec 2002 1,122.9 39.9 24.6 21.6
31 Dec 2001 1,250.3 44.8 27.2 23.9
31 Dec 2000 929.3 39.1 23.7 23.0

[a]: Restated to correct accounting misstatement in Industrial Services division. Included for comparison.[127]

Net asset value[edit]

Interserve Net Asset Value
Year Million Pounds Sterling

[a]: Restated to comply with IAS 19, IFRS 3, IAS 10, IAS 39 and IAS12[128]


As of 22 February 2013 Interserve listed the following as "significant" institutional shareholders:[3]

Holder Shares held (m) % Held
Henderson Global Investors Limited. 9.89 7.71
JPMorgan Asset Management (UK) Limited. 6.28 5.02
Mondrian Investment Partners Limited. 8.78 4.99
Standard Life Investments Limited. 6.37 4.94
M&G Investment Management Limited. 5.96 4.50
Legal & General Investment Management Limited. 3.80 2.99
Acadian Asset Management LLC. 3.09 2.47
Norges Bank Investment Management. 2.76 2.17
LSV Asset Management. 2.52 2.00

Corporate social responsibility (CSR)[edit]

Interserve was a constituent of the FTSE4Good Index,[129] designed to objectively measure the performance of companies that meet globally recognised corporate responsibility standards.[130]

CSR history[edit]

The company has since 2002[131] published a corporate social responsibility report section, as a means of social accounting, within its Annual Report and Financial Results.

The Observer’s "Good Companies Guide" 2008, compiled to establish Britain’s most ethical companies[132] ranked Interserve in its top 20[133] out of all companies listed on the FTSE 350 Index

In 2012 Interserve established the Interserve Employee Foundation, a registered charity,[134] which as noted in the British Quality Foundation Achievement Award 2012 citation, "aims to improve the quality of life and life chances for people in the community where they live and operate by utilising the skills, capabilities, resources and enthusiasm of Interserve's employees." [135]

It was announced on 25 March 2013[136] that Interserve was to establish an Integrated reporting accounting system, a series of metrics that are designed to measure more than financial performance,[137] by contributing not only towards financial stability, but also sustainable economic development.[138] The company joined the International Integrated Reporting Council worldwide pilot programme, comprising 85 companies,[139] which sought to develop a reporting system that communicates how an organisation’s strategy, governance, performance and prospects lead to the creation of value over the short, medium and long term. Interserve developed a plan, ‘SustainAbilities’,[140] in conjunction with sustainability adviser, environmentalist and writer Tony Juniper,[141] co-founder of The Robertsbridge Group,[136] that would measure the company's performance against its knowledge, natural and social capital, in addition to its financial capital.


Interserve is accredited with compliance to the following International Organization for Standardization (ISO) standards:[142]

  • ISO 9001 - Quality Management - deals with the requirements that organisations have to comply with[143] to meet the fundamentals of quality management systems,[144] including the eight management principles[144][145] on which the family of standards is based.
  • ISO 14001 - Environmental Management - is a standard that sets out the criteria that organisations processes are required to achieve in order to; (a) minimize how their operations (processes etc.) negatively affect the environment (i.e. cause adverse changes to air, water, or land); (b) comply with applicable laws, regulations, and other environmentally oriented requirements, and (c) continually improve in the above.
  • OHSAS 18001 - Occupational Health and Safety (OH&S) - is an international standard for occupational health and safety management systems. It specifies the requirements for an organisations OH&S management system that documents through a transparent process its policy and objectives, to take into account legal requirements and information about OH&S risks.[146][147]


Interserve have been recipients of the following business and industry awards:

Royal Society for the Prevention of Accidents (RoSPA) – President’s Award [148]

- Interserve Construction 2012,[148] 2011,[149] 2010,[150]

- Interserve Engineering Services 2012,[148] 2011,[149]

- Interserve Defence 2009,[151] 2008,[152] 2007,[153] 2006,[154]

- Interserve Industrial Services 2005,[155] 2004,[156]

British Quality Foundation UK Excellence Award 2012 [157] - Interserve Construction

The Queen's Award for Enterprise 2010[158] - RMD Kwikform

The British Safety Council – International Safety Award 2013 – Distinction – Interserve Industrial Services Limited[159]

Corporate lobbying[edit]

Interserve is a member of Constructing Excellence,[160] The Business Services Association[161] and Build UK.[162]


Accounting irregularities[edit]

On 14 August 2006 the company announced to the London Stock Exchange that accounting issues relating to the mis-statement of accounting balances within its former Industrial Services Division had been uncovered.[163] The discovery of these accounting irregularities led to a write down in profits by £25.9m, including prior years (see section 3 Financial Information), and six senior managers were suspended with the company stating that accounting mis-statements dating back "several years" had been uncovered following changes in the organisation. The Daily Telegraph reported that 'an investigation had discovered that controls in the division involving work in progress were, in the words of Lord Blackwell, chairman, "repeatedly evaded over several years in what appears to have been a concerted effort by certain divisional managers to over-state divisional results." He added that the board was concerned that the deliberate nature of the evasions had gone undetected for so long despite internal and external audit scrutiny.'[164]

Office of Fair Trading investigation[edit]

It was announced that in April 2008 the company became subject to an investigation by the Office of Fair Trading (OFT) under the terms of the Competition Act.[165] The investigation was described by the OFT as "one of the largest ever Competition Act investigations" and a total of 112 firms in the construction sector in England were implicated. On 22 September 2009 the OFT concluded that Interserve subsidiary Interserve Project Services Limited had engaged in illegal anti-competitive bid-rigging activities[166][167] and imposed a fine of £11,634,750.[168]

Alleged blacklisting[edit]

A case was brought by three claimants who were scaffolders and shop stewards, against subsidiary company Interserve Industrial Services Limited (IIS) at an Employment Tribunal.[169] IIS and the claimants trade union, UNITE, were party to a collective agreement that provided for the company to "undertake as far as is practicable to place onto an appropriate contract an NECC accredited senior steward". A union representative therefore contacted a manager for the company and advocated the employment of the claimants on a contract awarded to IIS. The manager decided on the basis of the contact with the union representative not to recruit any of the three claimants.[170] The claimants contended that a deliberate decision had been made not to recruit them because of their union activities and that their names had been blacklisted by the company.[171] The Tribunal ruling supported the IIS evidence that the union tried to bully the company’s manager into employing the three men, acted in a combative manner which was resented and that the company did not want to be dictated to about whom to employ.[172] The judgement was subject to an Employment Appeal Tribunal where the ruling was upheld in Interserve’s favour.[169][170][171][172]

Notable construction projects[edit]

Previous names[edit]

The Company has been known as Interserve Plc since 2001. The corporate genealogy since foundation is as follows:[118]

  • 1884 - The London and Tilbury Lighterage Company Limited.
  • 1896 - The London and Tilbury Lighterage Contracting and Dredging Company Limited.
  • 1904 - Tilbury Contracting and Dredging Company Limited.
  • 1906 - Tilbury Contracting and Dredging Company (1906) Limited.
  • 1908 - Tilbury Contracting and Dredging Company Limited.
  • 1964 - Tilbury Contracting Group Limited.
  • 1981 - Tilbury Contracting Group Public Limited Company.
  • 1981 - Tilbury Group Public Limited Company.
  • 1991 - Tilbury Douglas Plc.

See also[edit]


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External links[edit]