ladybackpacker

I'm looking for some accommodation advice and maybe you can help me out here: I'm planning a trip to the UK on July as I'll be staying in London I'm traveling on a budget so I'm looking for a nice and cheap B&B in London, any advice on that matter? I've found tons of options at http://www.clickbed.com/london-b-and-b-3-3.html but maybe you have better options for me. Thanks a lot!