Finding Accom for Term 2 & 3

Long story short, I thought I'd be able to handle commuting for the upcoming university year but realised that I really don't want to live at home. I get that it's late now so I probably won't be able to apply for accommodation starting September, but does any one know any ways I can find short term accommodation starting January in London? I'd really appreciate it :( my uni (UCL) doesn't offer contracts for people beyond 1st year