Asian investors have also extended their interest to prime areas such as Mayfair. The Indian based Lodha Group recently acquired the former Canadian High Commission and has submitted plans for 41 flats behind the existing façade. The property lies on Grosvenor Square, opposite the current US Embassy. There was stiff competition for the site, with the developer behind One Hyde Park also interested. The property was sold for over £300 million.

The list of such deals appears to be limitless.

To confirm the scale of Asian buying, Alex Newall, managing director of Hanover Private Office says that more than 20 per cent of units in large London schemes in the development pipeline are under control of Asian developers – a massive contrast to the situation over the past 15 years when none were undertaken, it said in a report.

Far Eastern developers have only recently established themselves as major players in the London new build market. In the last 15 years, they have not been involved in any single developments of over 500 units, Hanover said. All that has changed: Asian developers are now behind more than 21 per cent of units at application, permission or under construction stage.

A report yesterday by the international property firm, Cushman & Wakefield, which does extensive work in Asia, added more confirmation to the trend. In a white paper, entitled China's Outbound Boom: The Rise of Chinese Investment in Global Real Estate, it said that China has emerged as a major global exporter of capital in recent years, with Chinese outbound real estate investment growing rapidly. Chinese outbound investment in commercial property reached a total of about $33.7 billion in the period from 2008 to June 2014 , growing more than 200-fold during that time. It is fair to suppose a hefty chunk of this money has gone to London.

A number of forces are pushing this trend: London has made a point of being friendly to foreigners –notwithstanding some removals of tax breaks on foreign-owned properties – and the relative strength of the UK economy contrasts with the more lacklustre continent. China’s economic prowess and a desire from high net worth citizens to park some of their assets abroad has put London in the frame.

Another factor might be the UK’s investment visa regime, which allows wealthy investors to obtain a visa within a certain period in return for investing at least £2 million in to the UK; despite changes, the UK’s renowned non-domiciled system is also relatively friendly to the international investor who also wants to hang out in London.

An issue, as ever, is what might happen in the event of adverse shocks in Asia or London itself. Clearly, nothing is without its risks. The UK is likely, at least according to most economists, to see higher interest rates at some point next year, albeit probably behind the trend of the US. There is a UK general election next May and the opinion polling evidence does not point to a clear majority for a particular party; if the UK Labour Party, which wants to impose a “Mansion tax” on high-valued properties, were to obtain power, it could chill the market.

And there is always that nagging worry about whether London’s real estate market has already been in bubble territory for some time. In September, the total return index for UK property was almost 20 per cent over 12 months, almost three times the comparable performance of equities, according to Investment Property Databank. Both the Bank of England and the International Monetary Fund have warned about a housing bubble in the UK – and with the country’s history of boom/bust in bricks-and-mortar, those warnings deserve to be taken seriously.

But whatever warnings or risks lurk out there, for the time being at least, Asian investors just cannot get enough of London.