Hello again, many thanks for your reply, I am sorry I cannot throw much light on Henry's movements when he was in Woolwich Arsenal, his son's birth certificate is the only record that he was there.
I tend to agree with you that there may be many batches of records missing as with so many people having worked there, there must have been many casualties and the records that come up in those years are so few.
I am very grateful for your help and your recommendations to check where he lived previously, he had many brothers and sisters that either stayed in Swindon or moved to London. In particular his one brother Ellis that lived, married and died in London but his distant family that I have been in contact know nothing.
I think I must keep pursuing this but with records seemingly missing when should I give up.
I would be grateful if you would contact me if anything on this subject comes to light in the future.