His film credits include All Quiet on the Western Front (1979), the horror film Inseminoid (1981), The Opium War (1997) and O Jerusalem (2006). Jephcott has also done radio including the part of Marlowe in The Christopher Marlowe Mysteries. This aired briefly on BBC Radio 4 in 1993.
Jephcott has the rare achievement of appearing in two episodes of Midsomer Murders as two different characters, entitled Death's Shadow and seven years later in 2006 - Four Funerals and a Wedding.
