This British embargo is a laugh.
R.T., who commanded a centurion tank for a while in the early 80's, says it was a standing joke that the centurions were so completely modified by the IDF that it would be very difficult to find any British parts in them, besides maybe a bolt or two.

If the British don't sell us ejection seats for airplanes, I guess we'll just have to do what we often had to do in the past in similar situations -- make our own. We might even end up making them better, and take over the market!