Having been called to the Bar in 1938, he became a Queen's Counsel at the age of 36. As a barrister he gained press interest for his defence of Ronnie Biggs in his trial for the Great Train Robbery. After graduating from practising law into the ranks of the judiciary in 1962, Argyle found himself at odds judicially with elements of the counter-cultural zeitgeist that increasingly dominated English society as the 1960s progressed, reciprocating in kind the animosity he attracted from its proponents in the public sphere with statements and decisions made from his bench which refused to yield to pervading air of Socialistic relativism and permissiveness, and as a judge representing a judicial authoritarianism from the earlier half of the 20th Century. As a judge, he is best remembered for his role during the Oz obscenity trial, in which the three Oz editors were tried on three charges, including "conspiracy to corrupt public morals", an offence which, in theory, carried a virtually unlimited penalty. The three defendants were found guilty, with Argyle sentencing Neville and Anderson to serve a term of imprisonment with hard labour, but the convictions were subsequently overturned on appeal, when it was found that Argyle had misdirected the trial jury on several occasions. At the time of Argyle's sentencing in the Oz trial, he had given Dennis a reduced punishment on the basis of his "lower intelligence". In 1995, the now millionaire publisher Felix Dennis won a libel action against The Spectator. In an article published on 20 May 1995, Argyle had claimed Dennis and his Oz co-defendants had imported and peddled drugs to school children, and also implied that they were behind threats against his life which had obliged him to stay in a hotel during the trial, guarded by armed Special Branch police. The Spectator donated £10,000 to two charities nominated by Dennis, in lieu of damages. However he declined to sue Argyle personally, commenting: "Oh, I don't want to make him a martyr of the Right: there's no glory to be had in suing an 80-year-old man and taking his house away from him. It was just a totally obvious libel." He retired from the Bench in 1987, after receiving a public reprimand from the Lord Chancellor for public statements that foreign immigration into the United Kingdom was out of control, and that Capital Punishment should be reintroduced into England's judicial system for certain crimes.
