@Klaus-Adler I know wingtips were changed to improve handling at low to medium altitudes. Probably scabbed on chaff/flares if they weren’t already a standard fit by then.
I think all the parts are included in the Airfix RAF boxing. Not been able to get my hands on either yet to confirm.
A really nice build. Always good to see one.
Could the title of the thread be edited though as the RNAS ceased to be after 1918. Should read Fleet Air Arm.