Yip, they are the Munki settings. I have spent 2 days now going through each available setting and re-calibrating to each with little success. I might just do a reset on it and give it another go tomorrow because I think I need a really strong coffee about now.
Also, the lab have sent me their ICC profile to soft proof and I saved it under LibraryColorsyncProfiles as suggested but when I go to View / Proof Setup / Custom, their is no available list in the dropdown box - see pic. Have I missed something? PS and laptop have both been restarted too.