TARIFFSIGN LIMITED Company number 01892043 · Monitor this company Active Overview People 4 Financial Control Charges Documents Analysis Location Related Registered office AddressAlton House, 66 High Street, Northwood, Middlesex, HA6 1BL PostcodeHA6 1BL Companies at this postcode 231 Average house price in HA6 1BL £462,000 (20 sales) Map