To take advantage of this offer simply quote TLEML4 when booking tickets online at www.tastefestivals.com/london or via the ticket hotline on 0871 230 7132
* Ticket offer only valid for Thursday and Friday only, offer closes 1st May 2009. Tickets are limited, booking and transaction fees apply.
Sure it's expensive but I always have a great day there, especially if the sun is shining!
If you want to go on Thursday or Friday, you can get two tickets for £37 by quoting TOP01 when you book. (toptable deal) Not sure if that helps!
Newspapers tend to run offers nearer the time.