Brian Croucher
From Tardis Wiki, the free Doctor Who reference
Brian Croucher played Borg in the Doctor Who television story The Robots of Death. He later played Kurt in the Reeltime Pictures spin-off video Shakedown: Return of the Sontarans and voiced Cotton in the Kaldor City audio plays.
Outside of Doctor Who, he is well-known for playing Travis in the second season of Blake's 7.