Having looked at the points mentioned in the above answer (27) I e mailed Hawker Restorations some details and photos but unfortunately they have chosen not to respond which is a shame.
I would have liked to have confirmed where it came from for no other purpose other than to satisfy my curiosity. Its a shame as Hawker may have been interested in the original Hurricane radiator and mint under carriage selector unit which I also have. Ah well never mind !!