Cliff finished as an Air Marshal and is a very familiar face and flyer at IWM Duxford, where he flies a variety of warbirds (predominately the Buchon and several Spitfire Mks extremely well IMHO).
There is a feature on his career in the RAF in the AAM, including a video, and one of his service uniforms. He talks with great foundness of his Halton days before his retraining as a pilot and subsequent career.
He is well known for his TV appearances in several productions (usually involving the McGregor brothers) of course.
I had heard about this, and do hope whoever 'found' these does the decent thing and 'leaves' them somewhere.