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It wasn't just a family memorial service, it was also for people who had known and worked and admired Prince Philip in a public and private capacity, witness Doyin Sonibare who spoke about her Duke of Edinburgh's awards.
I felt it was deliberately a short service because of the Queen's health, otherwise there would have been many more tributes.
Kurt Hahn was founder and headmaster of Gordonstoun school, he pioneered various new ideas about education and also set up the Outward Bound scheme, as well as founding other schools.
The DofE Award was his idea.
Philip may have agreed to chair the Award scheme, but it was John Hunt who designed it, set it up and ran it for the first ten years of its existence.
The DofE main website generously gives some credit to Philip, but does make it clear that it was Hahn's idea and Hunt's work.