Problem 1 - The CAA cannot transition to the EASA Implementing Rules while they don't know how many RTFs are in existence.
Problem 2 - There are currently too many RTFs because the CAA allowed everybody and his dog to register without bothering to conduct even the most basic checks on the validity of the applications (arguably resulting in at least two deaths).
Solution to both problems - Cancel all existing registrations and introduce a £100 recurring fee for a time limited re-registration.
Suddenly there are far fewer registered facilities and you know where they all are (why didn't someone think of this 13 years ago?? - Oh yes, I remember, they did but they were slapped down). Come the Brave New World, expect the fee to increase by a considerable margin to fund the EASA required oversight inspections (and the inclusion of gliding clubs as ATOs).