Daifly:
Single crew on these sorts of jets IMHO isn't a good idea. Think of a dirty wet night out of eg Stansted, vectors, then directs, numerous altitude/FL changes, plus many frequency changes is a busy enough task in a two-crew jet. Especially if you're sent to a point not on your flight plan (which happens), try to find that when you probably miss-heard it anyway. At least one pilot can do the flying whilst the other looks it up, into the FMS, chats on radio etc.
Have flown single in busy airspace and think it's a recipe for problems. Even if not for yourself, then as a knock on effect to ATC and other a/c
My thoughts.
H