FIRE Number for London, United Kingdom

A small 1-bedroom flat in Zone 3 or 4 -- areas like Lewisham, Walthamstow, or Tooting. Cooking most meals at home, with pub meals and market street food as affordable outings. Getting around on a monthly Oyster card. NHS healthcare is a significant financial advantage. London is brutally expensive, so this budget means real constraints on housing size and dining out, but the free museums, parks, and Tube access to the entire city keep life rich.

An elegant flat in Kensington, Notting Hill, or a converted warehouse in Shoreditch. Regular dining at top restaurants, premium private health insurance with Harley Street access, and first-class Eurostar to Paris. Royal Opera House season tickets, unlimited Oyster travel, and regular Uber rides. London is one of the world's most expensive cities, so even at this budget housing absorbs a large share, but daily life is genuinely affluent with excellent restaurants, culture, and travel.

A grand townhouse in Belgravia or Knightsbridge, or a penthouse overlooking Hyde Park. A cook several times a week, a full-time housekeeper, and full private healthcare with top Harley Street specialists. Business class as default, first class for longer trips. A nice car and driver. Regular fine dining at three-star restaurants. London is arguably the most expensive city on this list, so even at this level the budget has real limits -- but daily life is premium, comfortable, and you rarely think about costs.