Having searched on Google for ‘book festival Aylesbury’, I discovered a site called YoTix was leading enquirers to the (official) EventBrite . Thank you!

The EventBrite ticket link is https://www.eventbrite.co.uk/e/self-publishing-book-festival-aylesbury-tickets-1828267319769.

Please note this is a ticket-only event. Ticket sales close 6pm the evening before, Saturday 25th April.