Home buyers in London were twice as likely as the typical UK purchaser to acquire a property valued at £250,000 or more in 2012.
Just 27 per cent of transactions made in the country last year fell into this price bracket, while this proportion jumped to 60 per cent in Greater London.
The figures, which were published by Halifax Intermediaries Premier Mortgages, reflect how unparalleled demand in the capital has pushed up valuations significantly.
Land Registry data show that the average property price in the region was £373,207 in January, while abodes in England and Wales typically went on the market for £162,441.
There may also be a larger stock of premium housing in the capital, which attracts high interest from international property investors.
Head of sales at Halifax Intermediaries Ian Wilson believes that improved accessibility to mortgage products will fuel further increases to housing market transactions above £250,000.