The Manx JS31s were graced with registrations selected by the MD at the time, and he had an exchange with 'Roger Bacon' about them in the back of Flight. Would have been the early 1990s.
G-WENT is one that comes to mind but the others have fled my memory.
Ah, 1991 Page 1073:
Dear Uncle Roger,
Now surely you know us better than that!
(S&l, 10-16 April).
Yours,
TERRY LIDDIARD
Managing Director
Manx Airlines
(Operator of G-LEGS, G-ISLE, G-WENT,
G-OJET, G-OATP, G-UIET etc..)
[ Accompanying a photo of G-GLAM ]