EFFICIENT ENVIRONMENTAL CONSULTANCY LTD. Company number 08930741 · Monitor this company Dissolved Overview Analysis Location Related Registered office Address6 LANGDALE DRIVE, LANGDALE DRIVE, ASCOT, BERKSHIRE, ENGLAND, SL5 8TQ PostcodeSL5 8TQ Companies at this postcode 25 Average house price in SL5 8TQ £976,000 (27 sales) Map