On an ATC ground tour, I flew AEF (Chips at the time) and, in my last year, did the Avigation ATPL course and then the IR at Oxford (most expensive bit). I'd flown 4eng turbo-props so ME wasn't a prob.
The Chipmunk handling recency was v useful when I flew the IR in the PA39 Twin Com.
Far too long ago for me to be aware of detailed current requirements.
Do recollect Stn Cdr & entourage entering my room for inspection:
SC: "Ah, studying for promotion exams?"
Bas: "No, Sir, studying for ATPL exams!"
SC: "Ah." exeunt