SIEFFECT LIMITED Company number 15244718 · Monitor this company Active Overview People 1 Financial Control Documents Analysis Location Related Registered office Address150 New Road, Strawberry Ranch, Ascot, Berkshire, United Kingdom, SL5 8QH PostcodeSL5 8QH Companies at this postcode 13 Average house price in SL5 8QH £754,000 (24 sales) Map