As long as you know the all stuff in CAP 413 Supplement 3 you should be fine - you'll get "lost" (QDM/bearing etc) and probably have to relay a mayday or have some sort of pan-pan ("engine running rough..") and transit plenty of CAS ..
I managed it as a glider pilot - I found it difficult to get my head around the different handovers as radio use in the gliding world is very casual.. good luck