She was the girlfriend of the notorious BUF member Richard Alister "Jock" Houston, a prominent street activist and anti-Semitic agitator.
She was also a member of the Right Club, a pro-German society founded by the right-wing extremist Captain Archibald Maule Ramsay, the MP for Peebles and Southern Midlothian.
[3] Hiscox was detained under Defence Regulation 18B in 1940[4] but by early 1941 she had been released and was living in Chiswick, London, with her lodger, Norah Briscoe, a temporary shorthand typist at the Ministry of Supply.
In conversation, Briscoe disclosed to the agent that she was working in a sensitive area of the Ministry, that she was keeping carbon copies of documents she thought would be useful to Germany and that she wanted to pass them on.
On 16 June 1941, Hiscox and Briscoe were tried in camera at the Old Bailey where they both pleaded guilty to a charge under Defence Regulation 2A of intentionally communicating information which was likely to assist the enemy.