The amount of money you need when you first arrive in the UK should ideally cover 3 months of living costs. Any less and you may find yourself having to cut your stay in the UK short.
The following figures are based on our experience as a family of four (mum, dad and two teenage boys) living in Glasgow, Scotland.
I've provided a reasonable range of costs as well as some insights into what our budget looked like when we first arrived. Rest assured, the first 3 months is unique, and can be brutal. It's easier sailing once you start earning an income. Make sure you're sitting down while you read this!