Yeah, it sure is weird. I guess the main motivation was to show off to the public that the Navy had aircrew but I'll bet the guys were not too happy about parading in flying kit, haha.
I wonder what the station was near Birmingham that they were attached to.
They were almost certainly naval airmen training at 14 EFTS at Castle Bromwich, Birmingham.
Author: Swift to the Sky – New Zealand’s Military Aviation History Author/publisher: For Your Tomorrow - A record of New Zealanders who have died while serving with the RNZAF and Allied Air Services since 1915 & A Passion For Flight - New Zealand aviation before the Great War. Publisher of Gp Capt C M Hanson’s By Such Deeds - Honours and Awards in the Royal New Zealand Air Force, 1923-1999