So I have figured it out. Yesterday finally saw the show with my own eyes. He uses the 59 LP on WAM, MFN, BIA and GH. On OUATITW it's a 58 reissue
OK, so, I've been to a couple of gigs and watched a lot of videos posted online.
As far as I can see, the Original 58 Burst No 86811isn't on the tour. That's MK's absolute fave and I can only assume it's the value (probably £300,000+) that may be stopping him taking it on tour. It has a gold sticker at the back of the headstock that's been on there ever since he's owned it.
For BIA, MFN and a few of the others, I believe he's using an MK reissue. It just doesn't sound the same as the original 58 and the flame looks wrong. The plastics also don't match up to his 58.
Having looked at a lot of pictures etc online, I'm betting he's using the original '59 Burst for Why Aye Man etc. where there's a capo involved.
Why he's chosen to use that is anyone's guess, as that's probably worth as much as the much-loved 58.
On a final note, the majority of 59s were sprayed with dyes that were much less reactive to sunlight, which is why the 59 still holds a good deal of the red burst. The 58s were prone to fading, hence the almost tea tint of his original 58.