Stuart has been a councillor for Crouch since 2002. He is currently Vice-Chairman of the Audit and Risk Committee and also sits on the Place Scrutiny Committee, Licensing Committee and the Joint Standards Committee. 

Stuart is also a Basildon Council representative on the Basildon Bus and Rail Forum and the Basildon Taxi and Private Hire Consultative Forum. He has also, for many years, served as Secretary of the Basildon Council Conservative Group.

He lives in Basildon with his wife and is retired. Previously, Stuart represented Fryerns Central from 1992 to 1996 and Laindon from 2000 to 2002, making him one of the longest-serving councillors in Basildon. Stuart's is jointly the longest continuous term of office of any current councillor on Basildon Council (along with that of Cllrs. Kevin Blake, Tony Hedley and Carole Morris, who have all served continuously since the year 2000).

If you are a Crouch resident and would like to contact Stuart, please email stuart.allen@members.basildon.gov.uk.

He also holds regular resident surgeries on the first Saturday of the month between 9:30am and 10:30am at Noak Bridge Village Hall, Coppice Lane, SS15 4JS and the third Saturday of the month between 9:00am and 10:00am at Steepleview Hall, Willowfield (off Osier Drive), SS15 4EQ.

Stuart's ward colleague is Cllr Terri Sargent.

Crouch falls within the Wickford Crouch Division of Essex County Council. Stuart works closely alongside the local county councillors, Tony Ball and Malcolm Buckley, on county issues such as highways.