Tony, welcome to PC. Sorry you are facing so many challenges. Try to get your drinking problem under control by seeking help with Alcoholics Anonymous AA. They will help you get sober and help you get your life under control. Private message me by clicking on CANDC and I will give you locations in your area of UK - tell me the town or city you are in.
If you are going to be homeless soon, find other housing you can afford or get a list of homeless shelters and free food kitchens.
Find someone that is reliable and can watch your stuff or sell it. Winter is coming, so plan accordingly so you have warm clothing.
If possible get yourself into therapy to help you deal with the loss of your girlfriend.
Tony you will get through this somehow. Try to get yourself help - if you are having the shakes see if the county has a detox center.