Francis Robert George Henry James 'Flossie’ Forsyth was a British criminal who, at 18 years old, became one of the youngest persons to be executed in Britain in the 20th century.

At about 11.17 p.m. on Saturday 25 June 1960, on a footpath at the bottom of James Street, Hounslow, Middlesex, they set upon engineer Allan Edward John Jee aged 23, who was walking home after an evening with his fiancée, Jacqueline Herbert, to whom he had become engaged the previous day.

Forsyth and Harris were sentenced to death by Mr Justice Winn on 26 September 1960 under the Homicide Act 1957, which defined murder in the course of robbery as a capital crime (although nothing had actually been taken).

A petition for clemency signed by 3,000 people including The Earl of Harewood, Donald Soper, Gilbert Harding, Kingsley Amis and J.

The executions took place two days later at 9 a.m. Forsyth was hanged by Harry Allen (assisted by Royston Rickard) and given a drop of seven feet and two inches.

Three other eighteen-year-olds were executed in Britain in the 20th century, Henry Julius Jacoby in 1922, Arthur Bishop in 1925, and German POW Armin Kuhne in 1945.