..and you reminded me, Shy, of the second 'first solo' of EOLs towards the end of the course. Sadly I never instructed on the Whirlwind; when I popped out of CFS(H) we had one Whirlwind Flight, winding down gradually, on 1 Sqn, but I went straight to the Gazelle.
Done loads of EOLs in the Wessex though! (Yes, it was legal: Boscombe Down!)