Patti Clare, Sally Denyour and David Nielson.

Paula Lane and the girl who plays Jenny Bradley are good too.

Devendra, Fiz, Izzy, are the worst.

Actor:
David Neilson
Jack P Shepherd
(Worthy mentions to Joe Duttine, Michael LeVell, Alan Halsall)

Actress:
Jane Danson
Sally Ann Matthews
Paula Lane
(Worthy mentions to Tina O'Brien, Sally Dynevor, Samia Ghadie)

These of course are dependant on decent material, a luxury not afforded to Alan Halsall, Samia Ghade or Sally Dynevor in recent years!!

NB In her heydey Eileen Derbyshire would have been included in this list too., not sure if she us even still 'current' though!!