Old gig tickets - John Martyn

So, it was 35 years ago I saw the late, great John Martyn at Hammersmith Odeon. This would have been the " Well Kept Secret" tour, so just when WEA was trying to turn John into a big star. Never going to work, certainly not with the rocking out performance that night. Th'internet informs me that Duritti Column was the support band that night, but I've no recollection of seeing them. Perhaps I was late?