Routes Database

I'm pretty new to London (about 5months) and even newer to riding fixed. I'd never been on a road bike until summer! As most people, I instantly became hooked! I commute 4-5miles each way accross London everyday but I'd like to do some like training to up my game a bit. I've found a few 10-15mile routes with hills, but I think I could with some more circular routes that are a little longer with fewer hills to begin with. I live in Camden, so hills are almost unavoidable to some degree, but I don't know the whole area. Anyone got any suggestions?

Mikec has a North London hills route, you could try that.

I'm after something with *less *hills to start with please!