Station IX was responsible for the development and production of weapons for the SOE, which supported agents and cells of resistance throughout occupied Europe. It was one of several similar workshops and laboratories throughout England. Under its commanding officer Lt. Colonel John Dolphin, and Chief of Scientific Research, Professor D.M. Newitt, secret research included military vehicles and equipment, explosives and technical sabotage, camouflage, biological and chemical warfare.
It was situated at a mansion called "The Frythe" about an hour's drive north from London near the village of Welwyn. This had been an exclusive hotel but was commandeered in August 1939 by the British Directorate of Military Intelligence. In the grounds, small cabins and barracks functioned as laboratories and workshops.1 Heavily guarded, the personnel included civilian scientists and craftsmen, (who like Dolphin received "war service" military rank) and military personnel from all three services, who all wore their own regimental badges and uniform.2
All machines developed for the SOE by Station IX at Welwyn were given prefix "Wel-".3 Dolphin was responsible for the Welbike and Welman submarine and led the development of the Welfreighter. One of the most productive and creative engineers attached to Station IX was Major H. Q. A. Reeves who invented both the Welrod and the Sleevegun. He was also, among others, behind the silencer for the Sten gun, fluorescent night sights, the Welgun and the Welbum. This was made clear in a document that was produced at the end of the war to ensure that the correct people were credited for their inventions.4
51°49′12″N 0°13′24″W / 51.82000°N 0.22333°W / 51.82000; -0.22333
"S.O.E." Timelapse. Retrieved 25 April 2009. http://www.timelapse.dk/soe.php ↩
"The War Years: Memories of Inter Services Research Bureau". BBC People's War. 1 December 2003. Archived from the original on 11 February 2011. Retrieved 25 April 2009. https://web.archive.org/web/20110211235543/http://www.bbc.co.uk/ww2peopleswar/stories/14/a2096714.shtml ↩
"WWII Welbikes". Fly Boy Ken. Archived from the original on 6 June 2017. Retrieved 26 April 2009. https://web.archive.org/web/20170606032444/http://home.earthlink.net/~flyboyken/id15.html ↩
Boyce, Fredric & Everett, Douglas (2003). SOE: The Scientific Secrets. Sutton Publishing. ISBN 978-0-75093-165-6. 978-0-75093-165-6 ↩
"Special Operations Executive Records Release" (PDF). The National Archives. 8 February 2002. Archived from the original (PDF) on 25 October 2005. https://web.archive.org/web/20051025020900/http://www.nationalarchives.gov.uk/documents/new_releases_feb2002_SOE_recs.pdf ↩