Penley Radar Archives www.penleyradararchives.org.uk

The South East Echo www.thesoutheastecho.co.uk

Vulcan to the Sky XH558 www.vulcantothesky.com

Defence Electronics History Society www.dehs.org.uk

Signals Collection '40-'45 www.qsl.net/pe1ngz/signalscollection.html

Wikipedia the open access encyclopedia http://en.wikipedia.org/wiki/Radar

EKCO NOVAWARE www.stuffwelove.co.uk

EKCO SOCIAL & SPORTS CLUB www.ekcoclub.co.uk

Lipman Miliband Trust www.lipman-miliband.org.uk

International Cockpit Club www.internationalcockpitclub.org.uk

Southend-on-Sea Museums www.southendmuseums.co.uk

QUANTA FILMS www.quantafilms.com