Operation Julie was a UK police investigation into the production of LSD by two drug rings during the mid-1970s. The operation, involving 11 police forces over a 2½-year period, resulted in the break-up of one of the largest LSD manufacturing operations in the world. It culminated in 1977 with enough LSD to make 6.5 million ‘tabs’ with a then street value of £100m (equivalent to £570 million today) being seized, 120 people arrested in the UK and France and over £800,000 discovered in Swiss bank accounts.
The two LSD rings broken up by Operation Julie had begun life as one organisation. Its founders were David Solomon, an author, and Richard Kemp, a chemist, who first successfully synthesized LSD in 1969.
Unable to effectively distribute the LSD they had made, they turned to Henry Todd to handle sales. At this point the organisation was based in Cambridge. Later Todd enrolled Leaf Fielding as a tabletter, responsible for turning the raw material into accurately measured doses.
In 1973, the producers had a bust-up with the distributors and production ceased for a time. Kemp and Solomon set about organising another distribution network and recommenced LSD production in west Wales. Todd recruited a chemist, Andy Munro, to synthesise LSD for his distribution network at a laboratory they set up in Hampton Wick, Greater London. There were now two separate functioning organisations.
In 1975, Todd and Fielding changed roles. Todd took over the tabletting, Fielding ran the distribution network, supplying Russell Spencely who in turn supplied Alston Hughes (known as 'Smiles'). From Hughes, the LSD was distributed to a number of wholesale dealers in Wales and Birmingham.
In April 1975, Kemp’s red Range Rover was involved in a fatal accident with a car near Machynlleth, a passenger in the other car being killed. Kemp was known to Detective Inspector Dick Lee of the Thames Valley Drug Squad as a possible suspect in the drugs trade and when police searched his car they found six pieces of paper which, after being reconstructed, spelt hydrazine hydrate - a key ingredient in the manufacture of LSD. This crucial lead gave police their first vital clue into the drug ring operating in west Wales.
The discovery in Kemp’s car prompted the establishment of Britain's first combined drug busting operation led by Dick Lee of the Thames Valley Drug Squad. On 17 February 1976, a meeting at Brecon involving a number of chief constables and senior drug squad officers formed a multiforce operation. This was the beginning of Operation Julie.
In April 1976, a selection of 28 drug squad officers from 10 police forces were chosen and sent to Devizes in Wiltshire where they were trained in surveillance techniques. In May 1976, a police team moved into a farmhouse in Bronwydd overlooking Kemp's cottage. Initially, locals took them for birdwatchers but as the surveillance operation progressed from weeks into months, female officers were added. The first name of one of these surveillance officers, Police Sergeant Julie Taylor, was used as the operation’s code name.
Surveillance of Kemp noted his regular 50-mile commutes between his home in Tregaron and Plas Llysyn, an old mansion owned by an American friend Paul Joseph Arnaboldi, in Carno near Llanidloes. The mansion was watched by police from an old caravan and people arriving were monitored. Lee instructed police to break into the mansion. In the cellar, police took water samples which chemically matched LSD samples the police had.
Kemp's home was now put under 24-hour surveillance and listening devices were installed.
Lee also instructed two undercover officers to infiltrate the small community of Llanddewi Brefi to target Alston Hughes.
In October 1976, a police team based at RAF Hendon monitored a house in Seymour Road, Hampton Wick. This was the LSD laboratory run by Todd and Munro. Glass utensils used in this laboratory had been secretly marked by police at the factory that produced them in Yorkshire.
Raids, arrests and trial
On 26 March 1977, after 13 months of surveillance, Operation Julie officers swooped on 87 homes in England and Wales. The gang leaders were caught and a total of 120 suspects were arrested.
At Kemp's home a package containing £11,000 was found as well as LSD crystals and tabletting equipment. At Carno, laboratory equipment was dug out of a well. A further raid in the Dordogne region in France located documents that detailed and proved the LSD business had been immense. Details of French and Swiss accounts were found as well as share certificates.
On 1 December 1977, officers searched Kemp's cottage for a second time and dug up a large plastic box that contained 1.3 kg of LSD crystal - enough to create 6.5 million doses.
In 1978, 15 defendants appeared at Bristol Crown Court. It took a month for the prosecution to deliver the incriminating evidence. Kemp pleaded guilty and received 13 years in jail, as did Todd. Fielding and Hughes were sentenced to 8 years. In total, the 15 defendants received a combined 120 years in jail.
As a result of the seizure it was estimated the price of LSD tabs rose from £1 to £5 each, and that Operation Julie had removed 90% of LSD from the British market. It is thought that LSD produced by the two labs had been exported to over 100 countries. In total, 1.1 million tabs and enough LSD crystal to make a further 6.5 million, were discovered and destroyed.
A three-part television drama, called Operation Julie, was made by Tyne Tees Television and broadcast on ITV in 1985, following the events of the case from the police point of view. It was directed by Bob Mahoney.
In July 2011, Leaf Fielding’s book To Live Outside the Law, gave the first insider account of Operation Julie.
In September 2016, Stephen Bentley's book Undercover: Operation Julie - The Inside Story, gave an account of one of only three undercover officers engaged on the operation. 
- "Operation Julie: How I infiltrated a drugs gang". BBC News. 2 October 2016. Retrieved 2 October 2016.
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- Fielding, Leaf (2011). To Live Outside the Law: Caught by Operation Julie, Britain's Biggest Ever Drugs Bust. Serpent's Tail.
- Bentley, Stephen (2016). Undercover: Operation Julie - The Inside Story. Amazon: CreateSpace Independent Publishing Platform. ISBN 1530781558.
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- Merton, Paul (25 Sep 2014). Only When I Laugh: My Autobiography. pp. 97–99. ISBN 978-1448146307.
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- Ebenezer, Lyn (2010). Operation Julie: The World's Greatest LSD Bust. Y Lolfa. ISBN 978-1-84771-146-5.Bentley, Stephen (2016). Undercover: Operation Julie - The Inside Story. CreateSpace Independent Publishing Platform. ISBN 978-1530781553.
- Fielding, Leaf (2011). To Live Outside the Law: Caught by Operation Julie. Serpent’s Tail. ISBN 978-1-84668-796-9.
- Lee, Dick & Colin Pratt (1978). Operation Julie: How the Undercover Police Team Smashed the World's Greatest Drugs Ring. W. H. Allen/Virgin Books. ISBN 978-0-491-02176-0.