The 2012 Estates Gazette Rich List, now in its 10th year, shows that the 250 richest people in real estate have assets totalling £100.8bn.
It is the first time the combined fortune of the top 250 has broken the £100bn barrier.
The figure shows a £2bn increase on the 2007 boom year, a 16% uplift on last year and a 31% hike on 2009 levels.
The Duke of Westminster remains top of the list with £7.5bn, up by £500m on 2011.
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