SYSTEM INTEGRATION & ENGINEERING SOLUTIONS LIMITED Company number 05738564 · Monitor this company Dissolved Overview People 2 Financial Control Documents Analysis Location Related Registered office AddressSt Christophers House, 126 Ridge Road, Letchworth Garden City, Hertfordshire, England, SG6 1PT PostcodeSG6 1PT Companies at this postcode 278 Average house price in SG6 1PT £439,000 (21 sales) Map