AUTHOR SERVICES TECHNICAL (HERTS) LIMITED Company number 01353255 · Monitor this company Dissolved Overview Documents Analysis Location Related Registered office Address10 ST MARYS CLOSE, LETCHWORTH GARDEN CITY, HERTFORDSHIRE, SG6 3NW PostcodeSG6 3NW Companies at this postcode 2 Average house price in SG6 3NW £544,000 (13 sales) Map