SQ1 GROUNDWORKS LTD Company number 16617748 · Monitor this company Active Overview People 2 Control Documents Analysis Location Related Registered office AddressSeedbed Business Centre Vanguard Way, Shoeburyness, Southend-On-Sea, England, SS3 9QY PostcodeSS3 9QY Companies at this postcode 195 Average house price in SS3 9QY £441,000 (8 sales) Map