BQH in particular has been aggressively marketing itself to the corporate sector since the beginning of the Covid crisis (with packages including free landing fees etc)
The writing has been on the wall at LTN as far as corporate aviation is concerned for some time. Obviously, places like FAB & BQH have night closures (this occasionally benefits LTN or STN) However, long-term the growth will be at the London airports which do not handle commercial airliner traffic in any quantity. It remains to be seen if Cranfield manages to attract the corporate traffic its aiming for....