In reply to russholland:
With the exception of Holwick and Windmore, Middleton in Teesdale is about as far away as it's possible to get from any worthwhile sheltered cragging in the North Pennines area.
You'd definitely need a dry sunny and windless day for Windmore in the winter.
If there's any snow and ice about, you'd probably not want to try and get to the Eden Valley crags, as the roads over the fells catch any bad weather that is going. It was my sales territory for many years so know the roads ( and short cuts) like the proverbial back of my hand.
Armathwaite (Sandstone) is a good hours drive away via Alston and Hartside summit. About 35-40 minutes to Jackdaw Scar - Kings Meaburn - Limestone.
Both have plenty trees for top roping - though the routes at Armathwaite tend to be harder.