In reply to Tim_Ibbotson:
Up in the Lakes, really classic multi-pitch routes on big mountain crags, round about VS, include:
Eliminate A, Dow
Bridge's Route, Medusa Wall, Trespasser Groove on Esk Buttress
A bunch of routes on Scafell that I haven't done, e.g. Botterill's Slab (pick a big classic route on Scafell and it will be amazing, it's just a fantastic place to climb)
Kipling Groove, Gimmer (accessed by NW Arete)
Golden Slipper, Pavey (best combined with Arcturus, bottom end E1)
Obviously there are thousands more great multi-pitch routes, many on valley crags. But I find a day up on the mountain crags on these kind of routes more memorable.