For working it depends on what type of visa/permit you come in on if you get a retirement permit You can not work.The money you have can last if you stay away from bar girls with the top up of your OAP in 7 year if retiring here forever it will be tight don't forget health insurance it's about £100 per month good luck 🙏🙏
Turn off data. Only use WiFi I use a giffgaff sim which they sent to me here put £10 credit on it 2 years ago still have £10 on it now if I need to speak to bank eg I use Skype and put my uk number on the profile and the user thinks that you're ringing from england costs penny's to use