Sikachu said:
I didn't even begin to tell you that you should do more. There are several excellent reasons not to give money to homeless people on the street (though I personally find them unconvincing).
However, even if your story is true, statements such as "In the UK there are very few circumstances, if any, that can lead to someone being irreparably homeless. The benefits available for housing and job seeking are good enough that if someone wants money they can obtain it." are so ridiculously inaccurate that I can't even bring myself to laugh.
Like what? What circumstance can't be solved by the correct application to a local council?
http://england.shelter.org.uk/
http://www.direct.gov.uk/en/MoneyTaxAndBenefits/BenefitsTaxCreditsAndOtherSupport/Employedorlookingforwork/DG_10018757
There's quite a list on there, but basically if you apply as homeless you will get full assistance from the Council, combine this with jobseeker's allowance and most people will be able to get by. Basically they'll put you into temporary housing whilst your claim is reviewed and assuming you're homeless legitimately and from the area you should get a council house. Priority goes to younger people, pregnant women or women with dependants.
You really would be surprised, providing you are seeking help for any addiction (free) and are willing to take any reasonable job then the assistance is fantastic, why do you think we get so many illegal immigrants compared to many other places in the EU?