I have been living overseas for a few years and am now thinking of moving back to the UK. It hasn't been so long but a lot has changed in the country and in my personal life since I last lived there so I have some questions: 1) What is the average salary in the UK (in general, not just for teachers) and is the average different in London? 2) What would be considered a livable income in London zone 3 or 4? 3) What would be a livable income in Leeds or Newcastle? Thanks in advance!