"True, we did get Concorde out of it, along with British Leyland, Triumph Motorcycles and so on, [...]"
Don't forget International Computers Limited (ICL). That company went on to be an innovator in many things now taken for granted. Things like: video entertainment on demand; the OPD personal computer with in-built communications on every desk; packet switching networks (with the still non-privatised BT); the VME O/S designed to be secure.
Unfortunately they were ahead of their times in most of these things - which did not catch on for many more years.