Geoff Searle
From Tardis Wiki, the free Doctor Who reference
Geoff Searle was a cast member of the Big Finish Doctor Who audio story The Natural History of Fear. Because the characters are unnamed in the narrative, it's (on the surface) unclear which character(s) he played.
However, the liner notes confirm that he was the Voice of Light City.
A multi-talented entertainer, his career has largely been in independent films he himself has directed and produced.