How capable would Nimrod MRA4 be today if it had entered service?
Short answerIt would have carried substantial upgrades, but the key lesson is that cancellation did not remove the requirement and Britain later had to buy P-8s instead.
NotesThe answer focuses on the procurement sequence rather than predicting a detailed modern MRA4 configuration. Britain had already invested in new wings and mission technology before cancelling the programme. The underlying maritime-patrol need did not disappear, leading to the later P-8 purchase. Even more P-8s may ultimately be required, turning the cancellation into an example of savings that defer rather than remove capability costs.