The Nimrod Fleet has never been in better shape IMHO ....
But it is still an ancient derivative of the Comet, for goodness sake. As an airframe it is outdated and inefficient.
The MRA4 is extensively rebuilt.
And it is
still a Comet derivative, outdated and inefficient as an airframe!
The Nimrod has become nothing more than a vague link between the RAF/MOD in order to keep paying for British Waste Of Space's pension fund. The money continually spent on the Nimrod is hardly what
any sane person would call good value.