It's a myth that a CAA 'Public use' aerodrome licence allows freedom to come and go without PPR.
Read the conditions on any CAA aerodrome licence
here:
Condition 1 - The aerodrome is licensed for public use and shall at all times when it is available for the take off or landing of aircraft be so available to all persons on equal terms and conditions.
Condition 8 - Without prejudice to Condition 1, nothing in this licence shall be taken to confer on any person the right to use the aerodrome without the consent of the licensee.
Which to my legally untrained interpretation, means that PPR
can be required anywhere if the licensee so wishes. I'm certain that the CAA can't give blanket permission for an aircraft to land at a private aerodrome. Many 'public use' aerodromes don't require PPR but try calling up Gatwick or an RAF Base and see how far you get with lobbing in for a coffee on spec.
