Some of the biggest proportional increases in sales of £1m-plus homes happened outside London and its commuter belt last year, with sales almost doubling in Cheltenham and Birmingham.
While the capital accounted for 60% of £1m-plus sales, stronger house price growth in the rest of the country and steady demand meant luxury homes were being traded more widely than before – from Yorkshire to north-west England and the West Midlands.
The number of homes sold for more than £1m in England and Wales rose by 6% to 19,100 in 2017, according to HMRC figures.