House sellers' asking prices have soared to a new high in a further sign that confidence is returning to the market, a property website has reported today. There has been a 2.1 per cent month-on-month rise which pushed average prices to £249,841 in May, Rightmove has revealed, with new record prices set in London, the South East, and East Anglia. It marks the strongest start to a year for asking prices since 2004, with average prices rising by more than £20,000 so far in 2013. New highs: Average asking prices in London (pictured) breached the £500,000 mark for the first time as the national average soared. Prices in London broke then half a million pound milestone for the first time, standing at £509,870 - more than double the national average and an 8.6 per cent rise on a year ago. The biggest month-on-month rise took place in the north, increasing by 4.2 per cent to a typical price of £152,689, while East Anglia rose by four per cent to £233,447. More... On the hunt fo