How easy will it be to find a temporary job?

I will be 21 when i make my move to London (well, near london) in the middle of January and I do not have a college degree.

How easy will it be to find a temp job @ like a restaurant/pub, retail store, or some place in the local mall or something simaliar to that?  Does it just depend on the area or is there really no answer to this question?

Thanks
Michelle

Finding a job in a resturant or pub shouldn't be too hard at all.  You just have to show a willingness to work and show up on time.  The pay and the hours will be crap, but hey, it's a job.   

Thank You.  I know that i cant be too picky as i will be starting over in a new country and need something to pay for rent and everything else. 

Another question, would it be that hard to find a a job doing admin or clerical work in a office once im settled in?