The maps below exhibit that the area of Overseas France combined > area of British Overseas Territories. E.g. unlike France still with French Guiana, the UK no longer colonizes British Guiana, or anything in Australasia or East Africa. Leftmost picture, Rightmost.
This r/geopolitics comment doesn't definitively answer my question, for why
did the UK "from Suez until Brexit had much lesser ambitions and much greater acceptance of US hegemony, so they focused on improving the economy of their own country to the exclusion of maintaining a costly global footprint."?
Why didn't the UK "accept the fiscal burden of keeping them" like the French who "have always wanted to be a major player in geopolitics, and never fully accepted American hegemony"?