Rab,
Thinking about Pepper's very last recordings...
Along with soulpope's suggestion to look into the 1980 Ronnie Scott's sessions -- originally released as Blues for the Fisherman and True Blue on Mole Jazz -- I'd also suggest hearing Pepper's recordings from 1981 at the Maiden Voyage Club in L.A. These were originally released on three Galaxy LPs: Roadgame, Art Lives, and APQ: The Maiden Voyage Sessions, Vol. 3.
If you don't want to track down the original LPs, both of these gigs have been reissued in toto as 4-CD sets:
The Ronnie Scott's gig featured the following rhythm section: Milcho Leviev, Tony Dumas, and Carl Burnett.
The Maiden Voyage concerts featured George Cables, David Williams, and Carl Burnett.