Two of the towns with the biggest rise in house prices were in the London region. Uxbridge had a 11.7% gain and Bromley had an 11.5% gain.
Grays in Essex was one of the towns with the biggest fall in average house prices, with a 7.3% drop.
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The 20-year-old was found fatally wounded on Roth Walk, near Finsbury Park, north London at around 3am on Saturday, Scotland Yard said.
Police have arrested a man wanted in connection with a burglary at the home of pensioner Richard Osborn-Brooks.