I think there's a case that Saxby himself was more responsible for ARM's success than the technical merits their early designs may or may not have had.

What those early Archimedes systems demonstrated was that the whole thing did actually work, but their design was not what the market needed. Saxby was the right guy to lead them, and his energy just seems like something else.

Sophie (a major computing hero for many in the UK in my era) went on to do esoteric VLIW work at Broadcom for ADSL iirc.