London's latest population figures run just over 7 million, counting the city's 32 boroughs and the independent City of London itself. This area is approximately 610 square miles (1580 sq km). When the metropolitan area (6267 square miles, or 16,231 sq km) is factored in, the population leaps to just shy of 14 million.

London charges what's known as a value-added tax (VAT) on purchases made at hotels, restaurants, and shops. It's incurred at a rate of 17.5%. For travelers outside of the EU, it can often be refunded, with some restrictions and a bit of personal diligence, usually after you return home.