HIGH GRADE FIRE AND SECURITY TECHNOLOGY LIMITED Company number 09351798 · Monitor this company Active Overview People 2 Financial Control Documents Analysis Location Related Registered office Address102 Walton Avenue, Harrow, Middlesex, HA2 8QX PostcodeHA2 8QX Companies at this postcode 22 Average house price in HA2 8QX £484,000 (44 sales) Map