Aged 26, in 1991 he was working in the Wines & Spirits Department for Safeway, in Walderslade and Strood, when he decided to enlist at the Webber Douglas Academy of Dramatic Art.

[4] Stage roles have included Monty the DJ in the West End run and UK tour of Saturday Night Fever, and appearing at Canterbury's Marlowe Theatre from December 2003 to January 2004 in a pantomime production of Snow White and the Seven Dwarfs, alongside Toyah Willcox.

[6] In 2009, Williamson toured the UK playing habitual criminal Norman Stanley Fletcher in a stage version of the classic TV comedy Porridge.

[8] In 2018, Williamson wrote a BBC radio drama series titled Eden's End, set in the Kent hop picking season of 1939.

The series starred Shane Taylor (Band of Brothers), Steve Nallon (Spitting Image) and Candis Nergaard (Call the Midwife).

Williamson spent a year competing in the UK Quiz Grand Prix as research for his book A Matter Of Facts which details the world of elite general knowledge quizzing competitions.

During an appearance on ITV's Beat the Chasers (in which he won £120,000 for The Paul Strank Charitable Trust based in south London), the Dark Destroyer described him as "celebrity quizzing royalty".

[11] Touring various festivals and small venues, Williamson performs popular songs and has been praised across social media, recently receiving attention for duetting with Cher in an advert for UKTV's rebrand.