In reply to Rich2002:
If it's fully dry it will be good, but the sandstone is pretty fragile if it's at all damp so I'd be cautious, plus as others say the platform between Apiary wall and Fishermans Steps areas is pretty gnarly if its wet. Carrock Fell is a more reliable bet, as it rewards cold weather with excellent friction and isn't snappy. It gets the morning sun and is a superb winter venue provided you wrap up warm. If you're out West, Eskdale granite is also great in winter, just don't try driving over Wrynose/Hardknott passes to get to it on an icy forecast.