Ah, yes, if the UK CAA had set the questions then the UK AIP would indeed be the correct reference. However the questions come from the JAA question bank and my understanding is that ICAO rules are being examined, and not any national deviations.
As a Bristol student, I dutifully answered "Squawk 7600 and thereafter return to the route indicated in the current flight plan in the most direct manner."
The results are out next week...