RAC/OPS
Spot-on. I think a lot of people are confused about the meaning of IFR flight outside controlled airspace.
1. Above MSA
2. If above 3,000' fly quadrantal rule.
Rules of the Air Regs 1996, 29 & 30 for the details
My understanding is you don't need a flight plan, you don't need an ATC service.
Seems quite straightforward to me. Keep high enough to avoid bumping into fixed objects you can't see. Keep below 3,000' if you want to bimble about looking at all the pretty lights (my favourites are the trains...)
Anything I've missed?
Next week, 'VMC on Top', another UK no-no.
Cheers,
The Odd One