Some 23% more surveyors asked in a survey by the Royal Institution of Chartered Surveyors (Rics) expected house prices to fall rather than rise in the next three months. It found that a similar proportion reported that prices fell in July.

London was the only area of the UK that bucked the trend.

Surveyors said that price falls were most likely in the west of England, the East Midlands, and Yorkshire and Humberside.

The group said that buyers were still finding it difficult to access mortgage funding, but interest had not dipped as a result of the bad weather in July. However, the number of homes coming onto the market had dropped.

"If vendors want to sell their homes quickly, they will have to be realistic in their price expectations," said Peter Bolton King, of Rics

The survey comes after both the Halifax and the Nationwide house price surveys reported falls in values in July.

The Nationwide said that prices had fallen for four of the past five months. The Halifax predicted that there would be little change in prices during the remainder of this year, unless the recession became worse.

The Land Registry survey of house prices, widely regarded as the most comprehensive, showed a wide geographical difference in house price movement in England and Wales.

It said prices rose by 6.3% in London in the year to the end of June, but fell by 1.9% in Yorkshire and the Humber over the same period