HARMER SECURITIES LIMITED Company number 00884951 · Monitor this company Active Overview People 7 Control Charges Documents Analysis Location Related Registered office AddressGraham House, 7 Wyllyotts Place, Potters Bar, Herts., EN6 2JD PostcodeEN6 2JD Companies at this postcode 251 Average house price in EN6 2JD £537,000 (7 sales) Map