CIRCUIT-1 LTD Company number 09308798 · Monitor this company Active Overview People 2 Financial Control Documents Analysis Location Related Registered office AddressSt Christophers House, Ridge Road, Letchworth Garden City, Hertfordshire, SG6 1PT PostcodeSG6 1PT Companies at this postcode 277 Average house price in SG6 1PT £441,000 (21 sales) Map