Grandfather rights - surely my CAA issued intermediate aerobatic formation (lead and member) Display Authorisation down to 100' agl is evidence to those rights.
This is just so stupid, bureaucracy for its own sake.
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Many years ago, "JJ" was hauled in front of the magistrate for low flying at Santa Pod, he beat the place up and allegedly caused damge to the timing apparatus by going through it in the wrong direction.
He was found guilty and asked to surrender his licence. At this point he confessed that he didn't possess one. He was asked to explain himself and said, well during the war when they taught me to fly the Spitfire they didn't issue me with a licence!