Robert Liversidge

The committee reported on 15 October. Its members were clearly troubled by the case, but deferred to the imperatives of a Fighter Command fully stretched by the Battle of Britain. They recommended detention with review on 4 December 1941. Herbert Morrison endorsed the decision on 11 December, probably after being canvassed by his fellow Labour MP Bevan. Simpson has alleged that anti-Semitism influenced the decision.

On 9 November 1941, six days after the House of Lords issued its ruling, it was decided that there were no longer compelling reasons for Liversidge's detention. Liversidge was released on 31 December. Liversidge then joined the National Fire Service. After the war he became hugely wealthy through his continued business dealings. In 1948 he was called before the Lynskey Tribunal, as a friend of John Belcher, but he was exonerated of any misconduct. Until his death he remained bitter about his wartime treatment.

Defence Regulation 18B, which had been imposed at the start of the war, authorised internment. In early 1940 MI5 received intelligence that "three notorious Jew swindlers" were using "improper pressures brought to bear in High Places" to effect the release of internees from a camp at Seaton, Devon in return for payment of £500 (about £17,700 at 2003 prices). Thwaites was implicated, Liversidge was investigated, and the falsehoods about his birth were revealed. Liversidge was arrested on 26 April and charged with making a false statement. His flat was searched and the names of other persons known to the intelligence services were discovered. When he was interviewed it came to light that Liversidge had previously been Jack Perlsweig.

Liversidge volunteered for the army at the time of the Munich Agreement in September 1938 and for the Royal Air Force Volunteer Reserve in September 1939, using the false date and place of birth that he had used when obtaining his Canadian passport. He was commissioned Pilot Officer on 26 November 1939, and served as an intelligence officer in Bomber Command at RAF Wyton and RAF Wattisham, then in Fighter Command at RAF Biggin Hill and RAF Bentley Priory.

Liversidge's lawyers demanded particulars of these associations, but were refused. The more detailed Statement of Case asserted that Liversidge had "a very bad record," and referred to the Baumgart case and the Canadian passport application. It then alleged, on the word of the informant from 1937, that Liversidge had used the alias "John Stone" and had been involved in a fraud in New York City. The New York police had shown no interest in pursuing the matter through extradition. The Statement also claimed that Liversidge was an "associate" of Van Lighten, and alleged that he was involved, with a Leon Nussbaum and an interned German national named Richard Markus, in dubious dealings in industrial diamonds.

Liversidge returned to Britain in 1936, and became a wealthy and successful businessman. He legally changed his name to Liversidge in September 1937. However, his return was brought to the attention of the police by an informer and, although the arrest warrant from 1928 had been withdrawn in 1933, his Canadian passport was confiscated.

Some time before 1931 he adopted the name Liversidge (the married name of his eldest sister). In 1931 he applied for a Canadian passport in that name, claiming to have been born in Toronto and misstating his date of birth. He eventually managed a Hollywood recording studio, meeting a minor actress, Wanda Stevenson, and marrying her in 1936.

Liversidge's parents, Asher Perlsweig, a rabbi, and Sarah, were Jewish immigrants to Britain from Russia. He was born in Harringay, London, one of five brothers and three sisters. He left school at the age of 14 and drifted before becoming involved in financial services. In July 1928 two of his associates, David and Dore Baumgart, were tried at the Old Bailey for conspiracy to defraud over share dealings in which Liversidge was also alleged to have been involved. An arrest warrant was issued for him, but it was never executed. He subsequently admitted that he had become involved with some dishonest people, but he always denied being guilty of any wrongdoing.

Liversidge's business activities brought him into contact both with people involved in the intelligence services and with people who held views sympathetic to fascism. Lord Verulam was associated with MI6. Cudbert Thornhill had been a military attaché in Petrograd from 1916 to 1918 and later worked in political intelligence in the Foreign Office during the Second World War. Norman Thwaites, who had worked in intelligence in New York City during the First World War and had recruited the spy Sidney Reilly, chaired meetings for the fascist January Club and was an associate of H. W. Luttman-Johnson. Compton Mackenzie had been an intelligence officer in the First World War and had become a prominent Scottish nationalist. William Stephenson was a Canadian spy. Van Lighten, a Dutchman, had tried to join MI5 and was viewed with suspicion by the intelligence services as possibly a German agent. Liversidge himself provided secrets to the War Office.

Robert William Liversidge (11 June 1904 – 30 September 1994), formerly Jacob (Jack) Perlsweig, was a British businessman whose activities sometimes attracted the attention of the police and intelligence services. He was also a reputed spy and the subject of a cause célèbre as an internee in Britain during the Second World War.