There’s a review of the Simon Spillett Tubby Hayes Big Band Tribute at Wigan posted on London Jazz News. Details here - https://londonjazznews.com/2022/07/14/the-simon-spillett-big-band-celebrates-tubby-hayes-2022-wigan-jazz-festival/
Quite a number of lineup differences so I guess they have a ‘Southern’ and ‘Northern’ crew to save on petrol costs ! Mayne, Long and Barnes were in the saxes in both lineups.
As at Wigan, they did play Harry South’s ‘The Scandinavian’.