Former Dictator of the Union of Britain during the Oxford Trials, Summer 1947
When the final British Republican forces surrendered in Cornwall in November 1946, Oswald Mosley was a wanted man. Numerous assassination attempts by royalists, opposition syndicalists, Abwehr agents, and even a car bombing attempt by the Irish failed to kill what was seen as the face of the Third Internationale due to foreign and domestic propaganda. SAS raids into London led by Colonel T. E. Lawrence failed to locate the man. Not even the Republican generals who surrendered at Cornwall knew where Mosley was. The last anyone had seen of him had been right before London was taken by the Entente. Finally after a tip off by one of Mosley's old mistresses, he was found in a small coastal town by a police constable. Hating the man he saw as having destroyed Britain, the constable quickly reported Mosley to the local military police. The dictator of Great Britain was taken out of his car, handcuffed, and brought to a local jail before he would be transported to a more secure location.
Mosley's capture was a media sensation from the very beginning. Mosley was the only head of government out of any of the countries in the Third Internationale to have survived the Second Weltkrieg. His face was plastered on every newspaper and newsreel from Seattle to Sydney for about a week, especially as news of his planned escape via submarine to Indochina was revealed, fueling the 'exiled syndicalist in East Asia' trope that would be so common in media in the decades after. King Edward VII reportedly was 'elated' to hear of Mosley's capture.
By this point in time, Mosley's mental condition had decayed rapidly. The surrender of the last syndicalist holdouts in Cornwall had destroyed any illusions the once mighty dictator had about the 'final victory' he had so clinged to as the Third Internationale collapsed. He took to drinking and drug use, alternating between fits of mania where he blamed the people of Britain and his generals for failing the revolution and simply staring off into empty space. Indeed, it is widely believed that he was only captured due to his not making preparations for being recognized. When interned, his access to drugs and alcohol was cut off. While he suffered the mother of all hangovers afterwards, his mental condition slowly bettered to the point where he regained some sense of the charisma that had so enraptured Britain before the Second Weltkrieg.
Even as prosecutors brought forth witnesses to the numerous extrajudicial killings by Blackshirts in Britain and massacres in Ireland, Mosley verbally harassed witnesses and the courts authority as a whole, trying to turn the court into the trial of the century and as a way of rallying syndicalist partisans. In response, the prosecutors brought forth evidence of Mosley's extensive personal and systemic corruption. From having lavishly furnished country estates handed out to close associates and government ministers to drinking $20,000 (in exchange rate terms) wine bottles to stealing funds from all levels of government. All was laid on the table. It had the desired effect. Informants inside the syndicalist partisans indicated a sharp decline in morale among the troops. Mosley tried to justify his personal corruption to court through a waxing lyrical about how he did everything "for Britain". When the prosecution asked him how drinking $20,000 wine on the regular while Britons starved was for the good of Britain, he couldn't come up with an answer. Despite these attempts at breaking Mosley, he remained defiant, still trying to interrupt the proceedings and challenging the legitemacy of the court. Eventually, the prosecutors put him in a glass cage, able to hear the court taking place but not able put in verbal input, only speaking through his lawyer for the remainder of the trial.
When all the evidence was brought forth and all the questioning done, the decision was unanimous. For waging a war of aggression, undermining the peace and stability of the world, among numerous charges related to political killings and repression going back to the British Revolution, Oswald Mosley along with most high ranking officials in the Union of Britain, was sentenced to death by hanging. Mosley was defiant, struggling against the guards and proclaiming one last challenge to the courts authority before being physically removed. At his hanging, Mosley tried one last act of defiance, shouting, "We shall light a fire in Britain that the ages will not-". He was hanged halfway through his sentence, his head hitting the wooden floor below the gallow before choking to death for the next 10 minutes .