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. In 2006 he starred in the pantomime Dick Whittington at The Playhouse in Weston-super-Mare. He returned to the Marlowe Theatre from December 2007 to January 2008, in Aladdin, alongside Stephen Mulhern. During 2008 he played Nathan Detroit in the touring production of Guys and Dolls, having already appeared in the part in the West End. In 2008–2009, he was again appearing in Aladdin, this time at the Wyvern Theatre, Swindon. In May 2006, Williamson played the lead in the play Road to Nirvana at The King's Head Theatre London and in October 2006, appeared in a sketch as part of the charity benefit The Secret Policeman's Ball which was staged at the Royal Albert Hall. In 2009, Williamson toured the UK playing habitual criminal Norman Stanley Fletcher in a stage version of the classic TV comedy Porridge. The script had been newly written by the series' co-authors, Dick Clement and Ian La Frenais. In 2012 he toured in The Ladykillers. He played Baron Bomburst and Lord Scrumptious in the UK tour production of Chitty Chitty Bang Bang. Radio 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). Quizzing 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 this time he became a Top 50 ranked player in the UK. 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". Personal life Williamson has three children and has been married twice. His first child was born in 1987 when Williamson was 22. The child's mother was a circus performer with whom Williamson was in a relationship. After breaking up she told Williamson of her pregnancy but Williamson left to pursue a career in America, promising to care for the child on his return. When he returned the circus performer had married another