If you're homeless, (in the UK) you can wash and keep dry in a shopping centre (mall) which will have far better facilities. The only caveat being you have to

If you're homeless, (in the UK) you can wash and keep dry in a shopping centre (mall) which will have far better facilities. The only caveat being you have to not look or act like a homeless person and you must treat the place and other people with respect. Sadly, a lot of homeless people don't seem able to do this. Disclosure: been there, done it.