Condolences to the pilot's family.
It is a great shame that in the immediate aftermath the BBC is quoting an aviation "expert" as saying:
Aviation expert Julian Bray said the type of Gnat plane involved in the crash had been around since 1955.
He said: "They had great ideas for these little aircraft but they didn't quite made it. The RAF did use them for training purposes but never for display purposes. They went with another variant. They sold theirs on, mainly.
There are multiple inferences to be made there, but ones made on totally false premises. Perhaps Mr Bray can take the time to research the use of the Gnat T.1 with the Red Arrows.