BUZZ-UK property companies fall on more signs of post-Brexit stress

** UK property companies and housebuilders fall after an asset write-down and suspension of a leading property fund cause concern

** Standard Life Investments has suspended trading in its unlisted UK real estate fund (one the country's largest) after previously writing down its value by 5 pct

** First (Other OTC: FSTC - news) suspension in the sector since 2008: listed real estate funds from Standard Life (LSE: SL.L - news) , Picton, F&C and Schroders (LSE: SDR.L - news) down 8-15 pct

** St Modwen falls 5 pct after it writes down the value of its Nine Elms site, one of a number of prime London developments that has been hit by oversupply

** Capital & Counties, a joint developer of Nine Elms, down 4.2 pct

** Barratt, Persimmon (Other OTC: PSMMF - news) , Taylor Wimpey (LSE: TW.L - news) all among top fallers on FTSE 100, down c. 6 pct

** British Land (LSE: BLND.L - news) and Land Securities (LSE: LAND.L - news) both down c. 5 pct