THE CASE BEFORE YOU
Episode 3 - aired on the BBC 20 July 1959 IMDb Page
Episode 7 - aired on the BBC 24 August 1959 IMDb Page
A 7 part series of 30 minute court room dramas on the BBC.
Stan appears as one of the Barristers in Episode 3 and a character called Mr. Sylvetser in Episode 7. It's not clear if this is the same recurring character or different bit part characters.