Nickolas Grace
From Tardis Wiki, the free Doctor Who reference
Nickolas Grace is a long-working British actor who played the Time Lord Straxus in various Big Finish Productions audio stories, Loozly in Bang-Bang-a-Boom!, Balancer Skaarsgard and Viktor Skaarsgard in Equilibrium, Goole in Gallery of Ghouls, Professor Grove in Shadow Planet and Albert Einstein in the TV episode Death is the Only Answer.
He is perhaps best known for playing the Sheriff of Nottingham in the TV series Robin of Sherwood.