I think Henrik Hansen has recorded sessions for the musical as well, as you can see an accordion player which is not credited for the MK record and also bassist Ewan Vernal...
I made this screen captures:
- All the band clapping. I recall they did something like this for the song "Privateering", I heard some clapping at the single so it must be it
- Glyn Johns with MK. Maybe he was just paying a visit, I dont recall he was involved in the record nor the musical
- McGoldrick and the accordion player (maybe is the one who played in A shot at glory and Crimson, which name doesnt comes to mind now)
- Ewan Vernal on bass. He was the bassist in some promo gigs and also in the history festival with MK, usually plays with McCusker