One of the consequences of John's contract with Permanent is a dispute over the rights to the recordings he made for them. John was not satisfied with the tapes for Couldn't Love You More and decided upon an overhaul in the States. Manager John Lennard had to find a way to get a return on his investments.
The result is a plethora of compilations drawn from just a few records: The Apprentice, Cooltide, Live, Couldn't Love You More and No Little Boy. Sometimes released under obscure label names and even under misleading titles like Solid Air or One World.
The advice is to be aware of this phenomenon. Completists will buy this stuff anyway, other people know they have been warned to check the contents of strange titles.