Dennis played the leading role of ‘Gerry Standing’ in 10 series of the BBC’s hugely successful NEW TRICKS but he also known for his leading roles in ‘THE SWEENEY’, in which he co-starred with John Thaw, and ‘MINDER’.

His other television credits include WHERE THE HEART IS for ITV, THE CANTERBURY TALES for BBC, and ‘Costello’ in MOSES JONES for the BBC .

In Theatre he appeared as ‘Alfred Doolittle’ in the Royal National Theatre’s sell out production of ‘MY FAIR LADY’ at the Theatre Royal Drury Lane, in a Tour of DON’T DRESS FOR DINNER, in SAME TIME ANOTHER YEAR at Windsor, a Tour of Keith Waterhouse’s BING BONG, and a tour of JEFFREY BERNARD IS UNWELL amongst others.