His most high-profile screen role is probably the part of Mike Hardy in the BBC horseracing drama
science-fiction series Doctor Who may remember Greenstreet's performance as Ikona in the 1987 serial Time and the Rani
.
He directed and co-wrote his first feature film
The 13th Protocol in 2005, and wrote and directed the psychological thriller Silent Hours starring James Weber Brown, Dervla Kirwan, Indira Varma, and Hugh Bonneville through UK production company Gallery Pictures in 2018. Prior to its release, however, with the burgeoning worldwide audience demand for high-quality TV drama and on-demand box sets,[citation needed] the film's producers were approached to recut and release Silent Hours not as a film, but as a TV miniseries. Set in the naval city of Portsmouth in the run-up to Easter 2002, the gripping and darkly disturbing three 1-hour miniseries Silent Hours (Ep1: "The Silent Service", Ep2: "The Midnight Tide", Ep3: "Towards The Sea") is currently ready for worldwide release through French international distributor Fizz-e-Motion