Trevor Laird
From Tardis Wiki, the free Doctor Who reference
Trevor Laird (born 1957) played Frax in DW: Mindwarp and Clive Jones in DW: Smith and Jones, DW: The Sound of Drums and DW: Last of the Time Lords. He is, along with Elisabeth Sladen, one of the only actors who appeared in the original series to also play a recurring character in the BBC Wales version of the show.