[1] Roberts performed live as a non-playing frontman as The Stranglers recruited guitarist John Ellis and later Baz Warne to co-replace Cornwell, who sang vocals and played guitar.

In 1994 Roberts sang on The Listening Pool's (ex-OMD members Paul Humphreys, Martin Cooper and Malcolm Holmes) album Still Life on the track "Somebody Somewhere".

The show ran for a week in April 2008 at The Kings Theatre, Southsea as a trial to see whether the company could raise enough interest to finance a West End production.

Roberts has appeared in the television series Cranford as a featured character alongside Dame Judi Dench and Eileen Atkins and has collaborated with actor Stephen Donald (Blood Brothers, Brookside) in the north of England.

In 2010, Roberts performed as Frank Sinatra alongside Laura Nixon's Marilyn Monroe and Suspiciously Elvis at sell-out shows at Alive & Swinging in Brighton, United Kingdom.