The Ealing Blues Festival is part of The Ealing Summer Festival which also incorporates The Ealing Jazz Festival and The Ealing Comedy Festival. The Ealing Summer Festival is run by The Event Umbrella for The London Borough of Ealing.
Ticket link for all events here:
Enquiries regarding infrastructure, stalls, advertising etc. contact The Event Umbrella: www.theeventumbrella.com
Enquiries for acts wishing to perform, contact: firstname.lastname@example.org