In reply to your post Above The Clouds the person best qualified to comment is Barry Tempest.
Is a Member of the Royal Aeronautical Society and the Historic Aircraft Association along with the British Aerobatic Association.
Has over 13,000 hours of flying experience in some 350 types and variants of light aircraft including over 8,000 hours instructing.
Started display flying in 1958 and has over 2,300 public airshow performances in the UK and many other countries including France, Germany and the USA.
Was a founder member of the Barnstormers Flying Circus in 1963 and, in 1971, flew with the famed Rothmans Aerobatic Team in Stampe biplanes.
Has won numerous aerobatic competitions and display awards in the UK.
His career in aviation included the role of Chief Flying Instructor at a number of UK Flying Schools, training commercial pilots and flying instructors, air taxi work throughout Europe plus ferrying aircraft to the Middle East. From 1984 to 1997, as a Flight Standards Officer in the UK Civil Aviation Authority, his responsibilities included the regulation and oversight of all civil Air Displays in the UK.
Was a Flying Instructor Examiner for some 28 years and is a CAA appointed Display Authorisation Evaluator covering a wide range of aircraft.