British shadow factories
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British shadow factories were the outcome of the Shadow Scheme, a plan devised in 1935 and developed by the British Government in the buildup to World War II to try to meet the urgent need for more aircraft using technology transfer from the motor industry to implement additional manufacturing capacity.
The term 'shadow' was not intended to mean secrecy, but rather the protected environment they would receive by being staffed by all levels of skilled motor industry people alongside (in the shadow of) their own similar motor industry operations.
A directorate of Aeronautical Production was formed in March 1936 with responsibility for the manufacture of airframes as well as engines, associated equipment and armaments. The project was headed by Herbert Austin and developed by the Air Ministry under the internal project name of the Shadow Scheme. Sir Kingsley Wood took responsibility for the scheme in May 1938, on his appointment as Secretary of State for Air in place of Lord Swinton.
Many more factories were built as part of the dispersal scheme designed to reduce the risk of a total collapse of production if what would otherwise be a major facility were bombed. These were not shadow factories, though some now use that name believing shadow refers to attempts to achieve a level of secrecy.
- 1 Purpose and Use
- 2 List of shadow factories (incomplete)
- 3 Strategic dispersal
- 4 List of dispersal factories (incomplete)
- 5 Extent
- 6 National Archive catalogue entries
- 7 References
- 8 External links
Purpose and Use
It was impossible for these facilities to be secret, though they were camouflaged after hostilities began. They were war material production facilities built in "the shadow" of motor industry plants to facilitate technology transfer to aircraft construction and run, for a substantial management fee, in parallel under direct control of the motor industry business along with distributed facilities. General Erhard Milch, chief administrator of the Luftwaffe, was in Britain again in the autumn of 1937 inspecting new shadow factories in Birmingham and Coventry, RAF aeroplanes and airfields.
Up until the middle of 1938, the Air Ministry had been headed by Lord Swinton. He had been forced by Prime Minister Neville Chamberlain to resign his position due to a lack of progress in re-arming the Royal Air Force, the result of obstruction by aging Lord Nuffield. Swinton's civil servants approached their new boss, Sir Kingsley Wood, and showed him a series of informal questions that they had asked since 1935 on the subject, such as those posed to Morris Motors with regard to aircraft engine production capability at their Cowley plant in Oxford. As it turned out, the specialised high-output engines required by the RAF were made by Armstrong Siddeley, Bristol Aeroplane, Napier and Rolls-Royce, all of which employed a high number of sub-contractors. Despite their new factories, protestations by Wolseley Aero Engines (Nuffield) and Alvis were ignored. Their products were not required. Engines were specified by the aircraft's designers. Nuffield did participate on Wood's appointment providing the Castle Bromwich factory, but after two years management was so poor not one Spitfire had been produced at Castle Bromwich by May 1940. Castle Bromwich was withdrawn from Nuffield and place under the wing of Vickers.
The plan had two parts:
- Development of nine new factories. The government would build and equip the factories. Motor car companies would be asked to gain experience in the making of engine parts so, if war broke out, the new factories could immediately go into full production.
- Extensions to existing factory complexes to allow either easier switching to aircraft industry capability, or production capacity expansion
Under the plan, there was government funding for the building of these new production facilities, in the form of grants and loans. Key to the plan were the products and plans of Rolls-Royce, whose Merlin engine powered many of the key aircraft being developed by the Air Ministry, as well as Bristol's Hercules engine. Bristol Aeroplane would not allow shadow factories to build complete engines, only components. The exception was Austin.
The first motor manufacturers chosen for engine shadows were: Austin, Daimler, Humber (Rootes Securities), Singer, Standard, Rover and Wolseley. In the event Nuffield took Wolseley out of the arrangement and Singer proved to be in serious financial difficulty.
Wood handed the overall project implementation to the Directorate of Air Ministry Factories, appointing Herbert Austin to lead the initiative (most of the facilities to be developed were alongside existing motor vehicle factories), and the technical liaison with the aircraft industry to Charles Bruce-Gardner. He also handed the delivery of the key new factory in Castle Bromwich, that was contracted to deliver 1,000 new Supermarine Spitfires to the RAF by the end of 1940, to Lord Nuffield though in May 1940 the responsibility had to be taken from Nuffield and given to Vickers.
The buildings were sheds up to 2,000 feet (610 m) long lit either by glazed roofs or they were "north-lit". Office accommodation was brick and wherever possible faced a main road. These buildings were extremely adaptable and would remain part of the British industrial landscape for more than 50 years. One of the largest was Austin's Cofton Hackett started in August 1936. 1,530 feet (470 m) long and 410 feet (120 m) wide the structure covered 20 acres (81,000 m2). Later a 15 acres (61,000 m2) airframe factory was added then a flight shed 500 feet (150 m) by 190 feet (58 m) was attached to the airframe factory.
The new factory buildings were models of efficient factory layout. They had wide clear gangways, good lighting and they were free of shafting and belt drives. The five shadow factories in Coventry were all in production by the end of October 1937 and they were all making parts of the Bristol Mercury engine. By January 1938 two of those shadow factories were producing complete airframes. In July 1938 the first bomber completely built in a shadow factory (Austin's) was flown in front of Sir Kingsley Wood, Secretary of State for Air. It was said eight shadow factories constructing aircraft components were in production in or near Coventry in February 1940.
As the scheme progressed, and after the death of Austin in 1941, the Directorate of Air Ministry Factories, under the auspices of the Ministry of Aircraft Production (MAP) gradually took charge of the construction of the buildings required for aircraft production. In early 1943 the functions of the directorate of Air Ministry Factories were transferred to the Ministry of Works.
There were three waves of construction of shadow factories and only the third and smallest reached Scotland in the shape of the factory at Hillington producing Rolls-Royce's Merlin engines. Ferranti's factory in Edinburgh will have been secret.
Similar plans were introduced in Canada, Australia, New Zealand and South Africa.
List of shadow factories (incomplete)
|Location||Manager for Ministry of Aircraft Production||Original use||Wartime production||Today|
|Acocks Green, south of Birmingham||Rover Aero||Westwood family's market garden||Parts for Bristol Hercules radial engine||Redeveloped as housing|
|Banner Lane, Coventry||Standard
Aero No. 2
|Golf course||Bristol Hercules sleeve valve radial engines||Ferguson then Massey Ferguson tractors.
Closed 2002. Now housing
|Blythe Bridge, Staffordshire||Rootes Securities||Blenheim, Beaufort, Beaufighter||Indesit cookers|
|near Bolton, Lancashire||de Havilland||Airscrews|
|Browns Lane, Coventry||Daimler||Farmland||Aero engines,Aircraft sub-assemblies||Jaguar's Browns Lane plant now housing|
|Burtonwood, Warrington||Fairey Aviation||Assembled and modified imported American aircraft|
|Canley-Fletchamstead Hy, Coventry||Standard
Aero No. 1
|vacant land on Standard's Canley site||Bristol Beaufighter
De Havilland Mosquito
|Standard Motor Company demolished after closure in 1980. Now housing|
|Canley-Fletchamstead Hy, Coventry||H M Hobson||vacant land on Standard's Canley site||Carburettors for aircraft engines||Standard Motor Company demolished after closure in 1980. Now housing|
|Castle Bromwich, West Midlands||Nuffield Organisation then Vickers||Farm/Sewage works||11,989 Supermarine Spitfires, Avro Lancaster||Dunlop Research Centre, Fisher and Ludlow — Pressed Steel, Jaguar|
|Christchurch, Hampshire||Airspeed||Airspeed Oxford|
|Clifton near Manchester||Magnesium Elektron||Magnesium alloys|
|Cofton Hackett, East Works, Longbridge||Austin||Farmland in Groveley Lane||Aero engines, Bristol Mercury and Pegasus
Aircraft production - Fairey Battle, Stirling, Avro Lancaster, Wellington Bombers
|Redeveloped as housing|
|Coventry, Stoke Aldermoor Lane||Humber||Aero engines|
|Crewe, Cheshire||Rolls-Royce||Farmland||Rolls-Royce Merlin||Bentley Crewe|
|Cwmbran, South Wales||Lucas||Farmland||Aircraft turrets|
|Distington, Cumbria||High Duty Alloys Ltd||Farmland||Aircraft parts made of Hiduminium||Abandoned|
|Errwood Park, Stockport||Fairey Aviation||Beaufighters then Halifax bombers|
|Drakelow Tunnels, Kidderminster||Rover Company||Hills||Machining parts for Bristol Hercules and Rolls-Royce Merlin||Preserved as former cold war site|
|Hillington, Glasgow||Rolls-Royce||Farmland||Rolls-Royce Merlin||Closed 2005, redeveloped as an industrial estate.|
|Meir, Stoke-on-Trent||Rootes Securities||Air Field||Harvard assembly, Mustang modifications||Aerodrome, now housing|
|Ryton, south east of Coventry||Humber||Farmland||Aircraft engines||Car production, now redeveloped|
|Lode Lane, Solihull||Rover||Farmland||Parts for Bristol Hercules radial engine||Land Rover Solihull manufacturing|
|Speke Airport, Lancashire||Rootes Securities||Speke Airport||Bristol Blenheim, Handley Page Halifax heavy bomber aircraft||Dunlop tyres, footwear, golf and tennis balls, now redeveloped as industrial estate|
|Staverton, Gloucestershire||Rotol||Staverton Airport||Variable pitch airscrews||Rotol Gloucester Airport|
|Trafford Park, Manchester||Ford||Derelict motor assembly plant||Rolls-Royce Merlin||Modern industrial uses|
|Willesden, North London||Freestone and Webb||Coach builders||Wing tips for the Spitfire||Housing|
|Woodstock Mill, Oldham, Lancashire||H M Hobson||Cotton mill||Carburettors for aircraft engines||Distribution centre|
The White Paper on Defence published in February 1937 revealed that steps had been taken to reduce the risk of air attack on sources of essential supplies, a knockout blow, even at the cost of some duplication, by building new satellite plants which would also draw labour from congested as well as distressed areas. There were still areas of severe unemployment.
London Aircraft Production Group
In parallel with the Shadow Factory scheme, the London Aircraft Production Group (LAPG) was formed in 1940 by combining management of factories and workshops of Chrysler at Kew, Duple, Express Motor & Bodyworks Limited, Park Royal Coachworks and London Transport. The major activity of the group was the production of Handley Page Halifax bombers for the RAF, ammunition, gun parts, armoured vehicles and spare parts for vehicles. The group was led by London Transport from their works at Chiswick, Aldenham Works and the new De Havilland factory at Leavesden, Hertfordshire, which had a large purpose-built factory and airfield (construction of both was authorised on 10 January 1940) for production, assembly and flight testing of completed Halifax bombers.
Due to the high priority placed on aircraft production, large numbers of workers were drafted with little experience or training in aircraft production, with over half the workforce eventually being female. At its peak the LAPG included 41 factories or sites, 600 sub-contractors and 51,000 employees, producing one aircraft an hour. The first Halifax from the LAPG was delivered in 1941 and the last, named London Pride, in April 1945.
Follow on initiatives
The shadow factory proposals and implementation, particularly its rigidity when bombed, meant that other key areas of military production prepared their own dispersal factory plans:
- Alvis had 20 sites in Coventry alone, producing vehicles and munitions. Soon after the total destruction of the Alvis factory by enemy action in 1940 Alvis were operating eight dispersal factories and thus managed to resume deliveries of their most important products. They were allocated nine further dispersal factories following further enemy attacks and after Pearl Harbour at the end of 1941 Alvis organised, equipped and managed a new shadow factory to make variable pitch propellor hubs.
- Rover managed and controlled six shadow factories on behalf of the Government and ran their own eighteen different dispersal factories.
- The Birmingham Small Arms Company Limited alone during the war controlled 67 factories from Small Heath.
List of dispersal factories (incomplete)
In June 1939 the response to a question in parliament was: 31 shadow factories were complete or under construction. The Air Ministry was responsible for 16 and, of those 16, 11 were working to full capacity. By that time large numbers of Bristol engines and aircraft were being made in Government owned shadow factories and in the Dominions and other foreign countries.
In February 1944 Parliament was advised there were 175 managing agency schemes or shadow factories.
National Archive catalogue entries
Information concerning the Shadow Factory plan and Shadow Factories can be found among the following records and descriptive series list code headings held by The National Archives. For the full set of references (including German shadow factories) see the Catalogue below:
|AIR 19/1-10||Shadow scheme and factories, 1935–1940|
|AIR 20/2395 AIR 20/2396||Shadow factories schemes|
|AIR 2, code 6/2||Aircraft production, shadow factories|
|AVIA 15, code 25/1||Factories general|
|AVIA 15, code 25/5||Shadow factories|
|T 161/1070||Insurance of Government property managed or maintained by private contractors; `Shadow' factories|
|T 161/1156||Banking: Shadow factories banking accounts|
- S E Little and M S Grieco of Oxford University quoted by Graham Robson in: The Book of the Standard Motor Company, Veloce, 2011, ISBN 978-1-845843-43-4
- General Milch On R.A.F. Progress. The Times, Monday, Oct 25, 1937; pg. 21; Issue 47824.
- Martyn Nutland, p93, Brick by Brick: The Biography of the Man Who Really Made the Mini - Leonard Lord, Authorhouse 2012, ISBN 978-1-4772-0317-0
- "Shadow Scheme: Morris Motors Ltd". National Archives. Retrieved 20 November 2010.
- White Paper Aero-Engines. The Times, Thursday, Oct 29, 1936; pg. 7; Issue 47518
- Two Schemes Confused. The Times, Monday, Oct 26, 1936; pg. 11; Issue 47515
- Martyn Nutland, p45, Brick by Brick: The Biography of the Man Who Really Made the Mini - Leonard Lord, Authorhouse 2012, ISBN 978-1-4772-0317-0
- Martyn Nutland, p65, Brick by Brick: The Biography of the Man Who Really Made the Mini - Leonard Lord, Authorhouse 2012, ISBN 978-1-4772-0317-0
- "Labour unrest . . . Battle of Britain" The Spectator 14 November 2007
- Martyn Nutland, p66, Brick by Brick: The Biography of the Man Who Really Made the Mini - Leonard Lord, Authorhouse 2012, ISBN 978-1-4772-0317-0
- Martyn Nutland, p97, Brick by Brick: The Biography of the Man Who Really Made the Mini - Leonard Lord, Authorhouse 2012, ISBN 978-1-4772-0317-0
- Equipment For The R.A.F. The Times, Tuesday, Oct 26, 1937; pg. 16; Issue 47825
- Completing Shadow Factories. The Times, Saturday, Jan 15, 1938; pg. 7; Issue 47893
- News in Brief. The Times, Saturday, Jul 23, 1938; pg. 9; Issue 48054.
- Great Britain In War-Time. The Times, Thursday, Feb 08, 1940; pg. 5; Issue 48534
- Industrial Scotland. The Times, Tuesday, Nov 23, 1943; pg. 5; Issue 49710
- Defence Forces and Policy. Cooperation with Britain. The Times, Wednesday, Jan 26, 1938; pg. 54; Issue 47902.
- Graham Robson: The Book of the Standard Motor Company, Veloce, 2011, ISBN 978-1-845843-43-4
- Bristol Aeroplane Company. The Times Friday, Jul 21, 1939; pg. 21; Issue 48363
- The Birmingham Small Arms Company Limited. The Times, Wednesday, Nov 08, 1939; pg. 14; Issue 48457
- Jaguar Cars Ltd. The Times, Friday, Apr 27, 1951; pg. 10; Issue 51986.
- Dunlop Research Centre. The Times, Thursday, Jun 08, 1950; pg. 2; Issue 51712
- Airspeed Limited, The Times, Wednesday, Jan 16, 1946; pg. 8; Issue 50351
- Building R.A.F. Machines. The Times, Tuesday, Aug 09, 1938; pg. 9; Issue 48068
- Austin Motor Company. The Times, Friday, Mar 29, 1946; pg. 10; Issue 50413
- Aero-Engines At Coventry. The Times, Tuesday, Sep 29, 1936; pg. 16; Issue 47492
- Martyn Nutland, p105, Brick by Brick: The Biography of the Man Who Really Made the Mini - Leonard Lord, Authorhouse 2012, ISBN 978-1-4772-0317-0
- "High Duty Alloys Ltd", Distington Cumbria Archive Service YDB 68
- Sherrard, Peter (2011). Rolls-Royce Hillington: Portrait of a Shadow Factory. Rolls-Royce Heritage Trust. pp. 108–110. ISBN 978-1-872922-45-4. Historical Series Nº 44.
- Malcolm Bobbitt, Page 19, Rover P4 Series, Veloce, ISBN 9781903706572
- Faster Bombers. The Times, Thursday, Nov 03, 1938; pg. 11; Issue 48142
- Dunlop Rubber. The Times Monday, Jun 11, 1945; pg. 10; Issue 50165
- Rearmament Surveyed. The Times, Thursday, Mar 03, 1938; pg. 9; Issue 47933
- White Paper On Defence. The Times, Wednesday, Feb 17, 1937; pg. 8; Issue 47611
- "London Aircraft Production". London: www.20thcenturylondon.org.uk. Retrieved 2 December 2011.
- Stratton, M.; Trinder, B.S. (2000). Twentieth Century IndustrialArchaeology. E & FN Spon. p. 74. ISBN 9780419246800. Retrieved 8 April 2015.
- Alvis Limited. The Times, Thursday, Jan 03, 1946; pg. 7; Issue 50340
- The Rover Company. The Times, Friday, Jan 04, 1946; pg. 8; Issue 50341
- Company Meeting. The Times, Saturday, Jul 20, 1940; pg. 9; Issue 48673
- James Nye, A Long Time in the Making, OUP 2014 ISBN 978-0-19-871725-6
- "High Duty Alloys Ltd", Distington Cumbria Archive Service YDB 68
- How 30,000 Jobs Were Created by Sebastian Z. de Ferranti. The Times Friday, May 23, 1969; pg. III; Issue 57567
- Historic England. "Personnel Lift 2, Spring Quarry (1576642)". PastScape. Retrieved 1 May 2016.
- Fafnir Factory Opening. The Times, Tuesday, Mar 20, 1962; pg. 19; Issue 55344
- A. C. Cossor Limited. The Times, Thursday, Oct 24, 1940; pg. 9; Issue 48755
- "Top secret World War II past of Newtown's Lion Works". BBC News. 13 June 2011.
- General Electric Company. The Times Friday, Jul 19, 1940; pg. 9; Issue 48672
- Industry has only to . . . The Times, Wednesday, Mar 28, 1973; pg. 30; Issue 58743
- Mr. C. H. Tucker. The Times Thursday, Sep 08, 1955; pg. 14; Issue 53320
- House Of Commons. The Times, Thursday, Jun 22, 1939; pg. 8; Issue 48338
- Capital Assistance for Industry, House Of Commons. The Times, Thursday, Feb 10, 1944; pg. 8; Issue 49776