Ian Collier
From Tardis Wiki, the free Doctor Who reference
Ian Collier (died 1 October 2008) appeared in two Doctor Who television stories: as Stuart Hyde in The Time Monster and Omega in Arc of Infinity. He reprised the role of Omega in Big Finish Productions' Omega. He also played Commissar Sallis in Big Finish Productions' Excelis Decays (audio story) and Isaac Summerfield in Big Finish's Bernice Summerfield series.