Savills' Head of UK Residential Research Lucian Cook grasps the political hot potato, assessing the potential impact of a mansion tax on the prime housing markets of the UK.

Guess which was the best overall investment in 2012...prime London residential property, gold, crude oil, or the FTSE 100?

Lib Dem proposals for a new property wealth tax that would levy an annual charge on owners of prime properties, which Ed Balls last week called "serious", are now being championed by leading housing charity…