In reply to Shaunhaynes99:
If you're looking for lead climbing I can recommend The Castle (Cafe floor and The Wells right down in the basement have lead walls) or The Reach, which has shed loads of lead walls (though it's a little harder to er, reach as it's a bit more out of the way).
The Westway also isn't too bad for amount of lead walls, though I've never done any leading there so not sure what it's like. They've got a small amount of Lead walls at Mile End, but it's really more of a bouldering destination.
Your 40M rope will defs be enough for The Castle and The Reach and I would have thought for The Westway too