I know how hard it is. When me and the DH had to share for a while in order to save for our own flat, it was frustrating to be interviewed by people we'd probably not be friends with after we move out. Who knows why the Hammersmith bedsit guy never called back. We ended up doing short term flatshares instead. We lived in some great areas we'd never have been able to afford on our own, usually subletting from a traveling Aussie. Another thought, have you posted a flat share wanted ad on gumtree? Maybe you'll find a like minded student to get a flat with!