Don’t forget that ARM was originally the Acorn RISC Machine.
Jack Lang was involved in the Pi, having also been involved in Netchannel, the STB company which used the Acorn technology and had funding from Hermann Hauser, co-founder of Acorn.
David Braben, co-author of Elite (and author of Zarch/Lander for the Acorn Archimedes) was an early Pi supporter.