Alright DD,
As an ex-York resident myself, have you tried hooking up with any of the local climbing clubs?
There's York MC, who if I remember rightly meet at The Fox inbetween town and Acomb on a Thurs night and also York Alpine Club, who I think meet in town somewhere - sure Google will be your friend finding out more.
+1 to etjoset's comment, we've stopped and given UKBers a lift to / from the station in the past. On a chilly day hanging out at the bottom of Gravelly Hill Lane with a pad and your thumb out should pretty much guarantee you a lift!