I know both the FI that reported the pilot to the CAA, and the pilot in question. The pilot in question is a lovely guy who obviously made a mistake. He has thousands of hours under his belt, and was the CFI of at least three flying schools himself in the past.
The FI who reported him is not the easiest person to get on with, if indeed it is whom I've been told it was. I believe the two persons involved may have had issues previously, on a personal level. The reporting FI is an older chap himself, head strong and 'always right'...
The pilot, Mr Andy Hart, used to run the airport cafe at Shobdon with his partner.