Professional looking for a double room

Looking for a large furnished double room in London, preferably North/North West/central to move in late October/early November.
Happy to live with males or females, all I ask for is cleanliness and respectfulness. Would also be nice to be friends with the people in the house instead of just co-habiting. A drink at the pub or a house dinner every so often is my ideal.
I'm 25, a professional and do shift work, although when I get home after work I tend to go straight to bed if it's late so no noise is made. On my days off I like to go to concerts, explore London and other cities, spend time with friends, go on holidays, etc.