A very poor legacy
"His legacy? BAe Systems, the successor to those early firms: an £18bn global colossus employing 88,000 people....."
Not much of a legacy for a commercial and technical pioneer. BAe hasn't designed any aircraft in their entirety since the Hawker Siddeley initiated the 146 and the Hawk in the 1960s using slide rules and paper. And BAe has never even got involved with any aircraft development at commercial risk, choosing to run away from civil air transport, and wait for the clowns of the MoD to pass them vast sums of money for follies like Nimrod AEW3, MRA4, or to continue to make Cold War relics like the Typhoon, and then do daft things like strap bombs to jet fighters, because neither the useless, useless MoD, not BAe's management had bothered to think that we might need strike aircraft as the antiquated Tornadoes came to the end of their useful lives.
If anybody wants to get a real feeling for Britain's aviation heritage, then instead of looking to BAe, they should take a trip to the Shuttleworth Collection (which I assure you is a fantastic day out, far more engaging than the impressive but sterile RAF museums).