House prices are now 9.5% below their 2007 peak, according to Nationwide. The average price of a UK home rose 0.5% from April to stand at £169,162, a slower rate of increase from April’s 1.1% rise. Nationwide said that house price inflation had dropped from 10.5% in May 2009 to 9.8%, reflecting the “weaker pace of increase in May 2010 …