I found this listing for Tickets to a Caribbean Music Festival 'In Reggae Time' at the Empire Pool, Wembley on Sunday, 21st September 1969 in an advert on page 28 of the 'Melody Maker' dated September 6th 1969: RECORDS & MUSIC 52 Stoke Newington Road, N.16 HARRINGAY RECORDS LTD. 73 Grand Parade, N.4 DEREK'S RECORDS 5 Turnpike Lane, N.8 AERO ELECTRICS 108 Acton Lane, N.W.10 PADDINGTON TRANSPORT 6 Great Western Road W.9 JOE'S RECORD SHOP 93 Granville Arcade, Atlantic Road S.W.9 HARVEY'S 276 Green Street, Forest Gate E.7
RECORDS & MUSIC 52 Stoke Newington Road, N.16
HARRINGAY RECORDS LTD. 73 Grand Parade, N.4
DEREK'S RECORDS 5 Turnpike Lane, N.8
AERO ELECTRICS 108 Acton Lane, N.W.10
PADDINGTON TRANSPORT 6 Great Western Road W.9
JOE'S RECORD SHOP 93 Granville Arcade, Atlantic Road S.W.9
HARVEY'S 276 Green Street, Forest Gate E.7