I've never even heard of that show. I'm willing to bet the same is true for a lot of people. I tend to keep my eye on a lot of British shows, and I've seen no buzz at all for this. Maybe it's some dark horse - there are undoubtedly people in Britain who've never heard of Boardwalk Empire or Breaking Bad - but I think Doctor Who would take the win if they went head to head. Especially if they draw another big-name guest star or two.
Is Downton Alley the type of show that would air at 6 PM on Christmas?