MRA4 EW?
TJ,
I think you're on to something - I really don't think BAe would mind making some of the spare Nimrod frames into EW ones. Seeing as Woodford have all the jigs and parts required to do it, plus it would keep everything British and even allow some flexibility should we need more maritime or more EW (as we did with the original batch of nearly 50 'rods with EAW conversions and all sorts).
I'd quite happily see Nimrod in flying on in RAF service rather than a soul-less American off the shelf clapped out frame.