OK, here's the Best Regular Actress;
ALEX KINGSTON: DOCTOR WHO
Yes, regular means appearing in every episode, but Alex Kingston has popped up in three of seven episodes this year as River Song, and will appear twice more in the Autumn run, so she's basically a regular. Anyway, River Song until last Saturday was a mystery woman- we didn't know who she was- but I'm sure that now she's been outed as Melody Pond Alex Kingston will take the role to even further lengths. Next time, Best Guest.