High proportions of flats within Knightsbridge and Belgravia have also featured among the best performers. It is no coincidence that these areas attract buyers from the Middle East/North Africa and Eastern Europe/CIS regions to a degree that is unmatched elsewhere in central London.

Knightsbridge has become a magnet for high net worth international buyers, and a number of high profile new build schemes have broken all records.

Knightsbridge appeal

The highest performing flats in Knightsbridge and Belgravia typically fall into two categories:

• Firstly, there are those developed to meet the demands of the new breed of ultra-wealthy international buyer. Flats in The Knightsbridge, 199 Knightsbridge, a new addition to our index, are a good example. Here, current values of between £3,500 and £5,000 per square foot, stand head and shoulders above similar sized traditional resale stock, and are testament to a standard of finish, range of amenities and level of additional services that the more traditional London stock cannot match. Undoubtedly, however, as new luxury developments such as One Hyde Park have broken new price barriers, so values
  for the closest comparable product have been pulled up in their slipstream.
• Secondly, there are flats within the most celebrated and aspirational streets and squares where premiums are well established. Eaton Square, where price growth has averaged 130% over the past six years, is a perfect example of this phenomenon.

Taken from:
Spotlight: Prime Central London Residential, 2005 to 2011