BLACK FORTRESS SECURITY SERVICES LTD Company number 16126224 · Monitor this company Active Overview People 1 Financial Control Documents Analysis Location Related Registered office Address9 College Avenue, Slough, Berkshire, United Kingdom, SL1 2NB PostcodeSL1 2NB Companies at this postcode 64 Average house price in SL1 2NB £334,000 (23 sales) Map