Hi
It could be. Is there any sign in Bordon?
Can we use those Royal Artillery attestation records to eliminate some? I don't have full access at the moment, but I guess if they were still in the artillery in 1921 they would have those new numbers?
There are others, including abroad, i.e. one born 1887, Birmingham, in the Royal Artillery?
Could he be
William Jones, born 1888, Birmingham, no. 1407223, formerly 36401
Is this the guy at Woolwich?

William Jones, born 1888, Liverpool , no. 1029092, formerly 288205
Why do they have birthplaces, but our guy doesn't?