Hi,
There is an entry in the Army Pensions records for a John Chaplin born 1869 Southwark, signed on at Grantham. On later pages he was discharged at Nottingham, unfit for service, next of kin Alfred Chaplin, Gregory Boulevard, Nottingham.
I see on the 1881 census John does have a brother Alfred, and Southwark is not far from Bermondsey.
The records are stamped deceased.
No sure reason to suppose it is your John though.
Best wishes
Cathy
