A big part of the problem is the lack of supply coming through the planning pipeline. Elliott says there are two reasons for this: development funding is harder to obtain from banks, and local councils are less willing to grant planning permission.

At the top of the market, in locations such as South Kensington, Mayfair and Marylebone, wealthy buyers are starting to pay closer attention to the asking price and developers are no longer offering the same kinds of discounts they were a year ago.

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In addition to a lower supply of new-build properties, private sellers are also contributing to the supply squeeze. “Many people have built a lot of equity over the last 10 years and are therefore in a strong position when it comes to pricing and discount,” says Elliott. “They are not forced to transact and can afford to hold.”

Of course, these factors are also part of what makes prime and super-prime London properties attractive—there are generally always plenty of potential buyers. Through thick, thin and Brexit, it appears that a desirable property in Mayfair at today’s prices still has excellent growth potential.

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This is home to all of London’s traditional prime neighbourhoods, including salubrious haunts such as Belgravia, Chelsea, Kensington, Knightsbridge, Marylebone and Mayfair, as well as Notting Hill.

Prices here have fallen by 3.6 per cent in local currency terms during the past year, according to Savills, suggesting there may be some opportunities to buy at relatively attractive prices, though Mayfair is still the most expensive area in the capital, with prime property going for more than £2,000 per sqft on average.

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This area comprises well-established Islington, the more up-and-coming neighbourhoods of Shoreditch and Wapping, and the area around the secondary financial district of Canary Wharf. Prices here have fallen by 2 per cent during the past year.

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Lying just to the north of Marylebone, the core prime neighbourhoods are the north-west districts of St John’s Wood, Maida Vale, Primrose Hill and Hampstead. Prices here have fallen by more than in any other areas, down 3.7 per cent, though there are some outliers—Hampstead, for example, has bucked the overall trend and has actually seen prices rise recently.

Prices have dropped less dramatically the further you get from prime central London, with south-west London the only area that has actually seen prices grow during the past year, albeit by just 0.7 per cent, driven by areas such as leafy Richmond.

Other neighbourhoods in this quarter of the city include Wimbledon, Putney, Barnes, Clapham and Battersea, home to the Malaysian-funded conversion of Battersea Power Station into luxury apartments that have proved popular with Asian buyers.

Many international buyers never look past London, but the UK’s second-largest city of Birmingham is an increasingly popular option for those who do. Prices have risen “aggressively” during the past few years, says Mark Elliott from Savills, driven by retail investors looking for value that isn’t available in London. But there is still room for more growth.

With the £1.5 billion regeneration of the former Smithfield wholesale markets site, a potential high-speed rail connection to London and the Commonwealth Games in 2022, Birmingham is expected to attract growing overseas investment during the next year or two.