Jacko,
Can't comment on the MRA4, R1 or AEW but for MR1, PN is correct and for MR2 add on 1 dry man.
Also the mimimum crew for pilot training/air displays etc was/is 7 (both MR1 and 2):
Normal flight deck
One nav
3 sensor
I wouldn't bother trying to tie the team down to individual bits of kit - way too many changes over the years!