london calling

hello,

i just have a little problem and hope that someone can help me for that.
i want to come to london on 25. march till 1. of april. i have already booked the flight and now found out that my friends there are still at this time in germany or in sri lanka. :55 so now i`m looking for a place where i can stay for this days. maybe theres someone who can give me a bed to sleep?