I thought it was Murray, too! But it's actually this fine bloke (http://www.imdb.com/name/nm0743605/), who you may remember from Life on Mars and other programs.

(And I do what I can to save you all from the terrible inevitability of, erm, terribleness that is Robin Hood-sans Marian. To quote suburbannoir, "how can you have Robin Hood without Marian?!")