Leaked fuel! Ha! The lightning oozed fuel from every rivet, when we took them in the hanger we would place sawn off drums under the wings to catch the drips, I probably spent more time with a brush and "chickenshit" cleaning up than actually fixing them. They didn't have fuel tanks as such, the mainplane was coated with some brown stuff (PRC) to form the tanks.
Ah, the Lightning. Those were the days when WE led the world in aviation technology.
As you said earlier, we would have continued to do so if the idiotic Labour government hadn't cancelled it.
Come to think of it, I can't think of anything good they've ever done.