INTERNATIONAL SECURITY SYSTEM LTD Company number 15974458 · Monitor this company Active Overview People 1 Financial Control Documents Analysis Location Related Registered office Address11 Second Avenue First Floor Flat, Second Avenue, London, England, NW4 2RR PostcodeNW4 2RR Companies at this postcode 20 Average house price in NW4 2RR £449,000 (23 sales) Map