Christopher Bowen
His television credits include: Mr Briggs in "Jane Eyre" for the BBC , Alastair Campbell in "Why We Went to War" for C4 , Ant Johnson in "Holby City" , Richard Carey in "Murder in Mesopotamia" ( Poirot ) , "Dempsey and Makepeace" , "Knights of God" , John Dexter in "Tanamera – Lion of Singapore" , Mordred in the "Doctor Who" serial "Battlefield" , "Little Lord Fauntleroy" , "Waiting for God" , "Castles" , "Peak Practice" , "Heartbeat" , "Doctors" and "Rosemary & Thyme" . 
<triplet> Battlefield <subj> Doctor Who <obj> part of the series