While i'm on the subject, reading the description in the Ministry of Munitions Disposal Board advert, I have no doubt in my mind that the warehousing in the aerial photos was No.5 SDP. At first, the extent of the site surprised me, but when you think about the role of this unit it does make sense. No.5 SDP was controlled by 25th Wing RFC, an administrative unit based at Castle Bromwich which in turn was responsible for controlling all the flying training squadrons and support units at Castle Bromwich, Lilbourne and Tern Hill. No.5 SDP was responible for supplying the daily needs of hundreds of men, and the material requirements of an extensive fleet of aircraft and mechanical transport - fuel, oil, spares etc. I have a photo of a couple of officers standing inside one of the sheds there and it's clearly a huge building.