Climbing in Ravensdale is very pleasant with some routes around that length, also Wildcat Tor.....not sure if you call those close to Sheffield. Stoney will have some routes close to that length too.
Wildcat has routes up to approx 45m in all grades.
Some routes at stoney are this long, but the first pitches tend to be poor, eg compositae groove, mortuary steps etc.
Beeston tor.
Good luck and enjoy the routes.
You will need to look at the 'Slimestone' for proper multi pitch (Willersley, High Tor, Beeston Tor etc). There are some multi-pitch routes on the Grit, both Valkyries, Two Pitch route etc but they are only because of rope drag etc.
