My take on what Glen has said is that all the compliance related activities such as documentation and flying staff is run by APTA, the club would just provide the 'facade' around the flying side that looks like and independent club. However the Flying is purely done by APTA under their AOC. The club would have a location, building, aircraft and support staff such as reception and accounts. APTA would be responsible to ensure those parts met the requirements prior to operating, ie appropriate maintenance categories and condition, runways adequate for purpose, libraries... etc. The club would pay to ensure that standard was met.