G.C.S. ALARMS 2018 LIMITED Company number 01783132 · Monitor this company Liquidation Overview People 8 Financial Control Charges Documents Gazette Analysis Location Related Registered office Address2 Colchester Road, St Osyth, Essex, United Kingdom, CO16 8HA PostcodeCO16 8HA Companies at this postcode 178 Average house price in CO16 8HA £329,000 (21 sales) Map