BUYING AGENT: Charles McDowell, McDowell Properties, London

McDowell is the go-to discreet buying agent for the most expensive properties in prime central London. The former banker set up McDowell Properties in 2002 and has worked with some of the world’s wealthiest property buyers to source the best houses and apartments in the capital. He is regularly quoted in the media when it comes to the best properties in London, trends in the market, and what the richest buyers are looking for in terms of central London property.