The first thing I would do is to get on Fetlife and/or Facebook put the shout out asking if anyone lived so close or know someone who lives close by.
Another thing I would do is find a bar or cafe and see if anyone is hiring someone to earn some cash so I could earn a ticket home, also check in with British embassy to sort things out like passport and such.
If I could I would phone family and friends to let them know what happened, how I was trying to sort it. Not to ask for their help but to let them know I am safe and sound, where I was staying for the time being and when I expected to get home. So they wouldn’t worry too much.