I do not agree because the civilian proof was not required when the Government sold the rifles off. As proof [sic] of this, if that were the case then ALL Britishex-military arms would have civilian Proof and they patently do not.
Where civilian Proof is done in the UK tends to be where the first dealer who needs to have the gun Proofed is located. For example my No.5 was first Proofed by a dealer in Surrey, for sale to me, and so was Proofed in London. My No.4 on the other hand came from a Birmingham dealer and so has Birmingham Proof. I could list all my guns an where they were they were first proofed (in the cases that I know) but you get the idea.
BTW, I don't recall Woolwich being a storage depot anyway but rather a manufacturing site.