He portrayed the villain Omega in the Fifth Doctor serial Arc of Infinity and later in the Big Finish Productions audio drama Omega. He played Bernice Summerfield's father, Isaac Summerfield, in Death and the Daleks, and he guest starred in the Big Finish Productions Doctor Who audio drama Excelis Decays.
He portrayed the antagonist Omega in the Fifth Doctor serial Arc of Infinity and later in the Big Finish Productions audio drama Omega. He played Bernice Summerfield's father, Isaac Summerfield, in Death and the Daleks, and he guest starred in the Big Finish Productions Doctor Who audio drama Excelis Decays.