His father, Leonard McLean senior, had been a Royal Marine during the Second World War, but after being debilitated by a near-fatal disease which he contracted in India, he became a petty criminal and swindler.
Sein Vater, Leonard McLean sen., war Royal Marine während des Zweiten Weltkriegs, jedoch nach einer, in Indien erlittenen, fast tödlich verlaufenen Krankheit, wandelte er sich zu einem Kleinkriminellen und Betrüger.