ONYX SQUARES LTD Company number 17113384 · Monitor this company Active Overview Control Documents Analysis Location Related Registered office AddressFlat 6 Mint House 3-11 Grenfell Avenue, Hornchurch, England, RM12 4DN PostcodeRM12 4DN Companies at this postcode 18 Average house price in RM12 4DN £454,000 (42 sales) Map