Marriott's most noted role was as Gavin Featherly in the BBC
leisure centre sitcom
The Brittas Empire. It ran for 52 episodes in over six years on
BBC1, from 3 January 1991 to 24 February 1997. He later wrote for the stage. His play
Meeting Mary was put on at the
Jermyn Street Theatre, London, in January 2005 while his piece ''Pete 'n' Me
, put on at the New End Theatre also in London in February 2005, was described as "skilfully woven" by Paul Vale of The Stage''. In 2000, Marriott left theatre acting to become Director of Drama at
Eastbourne College. Between 2015 and 2017, he co-wrote the play
Mengele with Philip Wharam, which toured theatres and festivals in 2017, including the
Edinburgh Fringe and
Ludlow Festival. The play starred Marriott as Dr
Josef Mengele and Emma Zadow as Azra'il. In the
autumn of 2017, it moved to the
SoHo Playhouse in
New York, where it won an award. Shows in 2018 included
Katzpace in London's
Borough Market, and the
Bedford Festival. As a constituent part of Guy Masterson's "Lest We Forget" tour, it played at
The Bakehouse Theatre in
Adelaide,
South Australia. Marriott also adapted and now performs a
PTSD-themed solo show,
Shell Shock, which was selected Best Male Solo Show (
Sunday Mail) at the
Adelaide Fringe in 2018. In late 2019 Marriott co-wrote (with Sherlock Holmes specialist
Bert Coules) a new one-man play,
Watson: The Final Problem. An initial audio version was made during the first Covid lockdown, followed by a single tryout performance at the Grove Theatre Eastbourne. Since then, Marriott has toured the piece to great success in the UK and abroad. ==Personal life==