** UK property companies and housebuilders fall after anasset write-down and suspension of a leading property fund causeconcern
** Standard Life Investments has suspended trading inits unlisted UK real estate fund (one the country's largest)after previously writing down its value by 5 pct
** First suspension in the sector since 2008: listed realestate funds from Standard Life, Picton, F&C and Schroders down 8-15 pct
** St Modwen falls 5 pct after it writes down thevalue of its Nine Elms site, one of a number of prime Londondevelopments that has been hit by oversupply
** Capital & Counties, a joint developer of NineElms, down 4.2 pct
** Barratt, Persimmon, Taylor Wimpey all among top fallers on FTSE 100, down c. 6 pct
** British Land and Land Securities bothdown c. 5 pct
