Is this legal in European airspace?
An IFR (airways) flight.
P1 seat: FAA PPL, no IR, but legal to fly the plane under VFR. He will do all the flying. (Actually he is IMC Rated and can do everything required anyway but this is of no relevance especially if the flight is in Class A or outside the UK).
P2 seat: FAA IR, legal to fly the plane under VFR or IFR. Not an instructor.
The plane is N-reg.
P1 is renting the plane so understandably wishes to log the flight. He's working towards the FAA IR.
Q1: is it legal, in UK airspace?
Q2: can the P1 pilot log it and, if so, what as?
I know for sure it is legal in US airspace, and the PPL can log it as either actual or simulated instrument time (depending on whether the flight is in IMC, or under the hood).
I also know it is commonly done anyway, openly, on the G-reg scene (people go up "VFR" and rely on the presence of somebody else with an IR in the RH seat to enable them to fly an ILS, etc if they need it). Obviously it is legal if the P2 is a suitable rated (IR/IMCR) instructor.