Site of Second World War Ground Controlled Interception (GCI) radar station '30G', Foulness Island (EHER 82449)

Partially destroyed. The site of a Ground Controlled Interception (GCI) radar station at Foulness. GCI stations were developed by the Air Ministry from 1940 to detect, locate and track enemy aircraft and provide inland radar coverage of Britain. Foulness was operational as an Intermediate Transportable station by January 1943. Intermediate GCI sites typically comprised a single aerial array mounted on a gantry and a 50ft by 18ft (15.2m by 5.5m) non-metallic operations hut. Additional on-site buildings included a small power house, huts for offices and recreation, and a guard hut for the site entrance. By the 1970s the station had been removed and only the partial remains of building bases and one pillbox on the western perimeter survive at the site.

NRHE data transfer: 1995-2002. Defence of Britain survey. Military site. SRF, with sketch drawing. 'The Radio'. Possible Radar Site ? Recorder- A. Beanse. <1> <2> A Ground Controlled Interception station located at Foulness (TR 006 932), called site 30G. Ground Controlled Interception (GCI) radar stations were developed by the Air Ministry from 1940 to detect, locate and track enemy aircraft and provide inland radar coverage of Britain. The stations worked in cooperation with local Fighter Sectors that had Airborne Interception (AI) radar fitted in its aircraft to enable the crew to accurately home in on targets. Foulness operated as an Intermediate Transportable GCI station by 28-JAN-1943. Intermediate GCI sites typically comprised a single aerial array mounted on a gantry and a 50ft by 18ft (15.2m by 5.5m) non-metallic operations hut. Additional on-site buildings included a small power house, huts for offices and recreation, and a guard hut for the site entrance. <3> Aerial photography from 1970 shows the partial remains of building bases at the site, with one pillbox on the western perimeter. <4>