The more basic question is whether I can just lend my plane (let's assume it is G-reg) to somebody, to fly around.
Obviously he will write up the flight in his logbook.
If that is illegal, I am absolutely staggered. Why should it be illegal? It cannot be illegal otherwise, in say a family, if the old man owns a plane then another family member would not be able to fly it.
If the above is legal then it must be legal for me to get somebody to fly the plane to a maintenance facility.
The fact that the pilot at the time logs the flight (and thus receives a "benefit") cannot possibly be relevant, which is what Whopity is saying.