Not to worry, John. My archive of complete 60's 'Jazz Monthly's' is useful in such circumstances.
In October's edition under 'coming events' it says:
'Jazz Expo '69
''' October 27th 8pm. 'Guitar Workshop' with Barney Kessel, Tal Farlow, Grant Green etc. Newport All-Stars featuring Ruby Braff, Red Norvo etc., Dakota Staton.
Sarah Vaughan and Maynard were featured on the 25th Oct. Hamp was featured on the 26th with Red Norvo and Gary Burton and that gig also had The Kenny Clarke/Francy Boland Big Band. October 28th had Louis Jordan, Bill Coleman and Albert Nicholas. Oct 29th had Hamp, Teddy Wilson and Ben Webster. October 30th had Albert King, Otis Spann, John Lee Hooker and Champion Jack Dupree, Monk and Cecil Taylor were featured on October 31st and Miles, Mary Lou Williams and John Hendricks were featured on 1st Nov.
Venue for all of the above was the venerable Hammersmith, Odeon. (in fact this was Miles last UK appearance until 1982, when he was back at Hammersmith (remember it well ).