"Douglas Livingstone (born ? ?, 1934) played Cliff Stone on Coronation Street in 1969. After an acting career that saw him appear in episodes of The Saint and Z Cars, Douglas became a successful television writer, and has penned editions of The Day Of The Triffids, Maigret and Midsomer Murders."@en . . "Douglas Livingstone"@en . "Douglas Livingstone (born ? ?, 1934) played Cliff Stone on Coronation Street in 1969. After an acting career that saw him appear in episodes of The Saint and Z Cars, Douglas became a successful television writer, and has penned editions of The Day Of The Triffids, Maigret and Midsomer Murders."@en . . .