Back on topic=======================================
The rules on Homelessness are varied depending on individual circumstances, Shelter have lots of useful stuff on their webpage.
Locally (to Southend) the situation is much better managed than most areas with the Night Shelter, YMCA, womans refuge, and other niche housing projects & DSS B&Bs: BUT the downside of that is that it makes the area a "magnet" for more rough sleepers who get drawn to the area in the hope of help/food/services etc.
HARP provide many many safe, supervised beds, wash facilities (personal and clothing), food, access to GP and dentist, advice re DSS, jobs, benefits, housing law, mental health, clothing, starter packs for new to bedsit living, even basic literacy. They help with counselling, mediation, medication, dependencies and more. Clients can, when trusted, help in running the kitchens and get basic NVQ in food hygiene etc. Staff walk the streets at night trying to help rough sleepers.
If you haven't guessed yet then I declare that I am "sold" on HARP and it's staff/work.
Check them out before pitching in on either side of the homeless agendas.