Would it be worth checking with the local council (planning) or MOD, if the ASD was actually buildings rather than more temporary storage? Was it road or rail served and did its use continue after WW2? If it was an army ASD it might be worth your while to contact the RAOC Association to find out if there are living members who could help: RAOC Gazette newsletter secretary is Maj (Retd) C R Stephens, RHQ The RLC, Dettingen House, Deepcut, Surrey GU16 6RW, tel 01252 833376, fax 01252 833375, email email@example.com, website army.mod.uk/raocassociation. The RLC museum has limited staff and resources so info from that quarter might be slow and sketchy at best. How about appealing for info in local newspapers too? Good luck in your quest.