What to drink with Heston’s Diamond Jubilee picnic

Heston Blumenthal’s Jubilee picnic hamper was unveiled yesterday - to be served at Buckingham Palace before an open-air concert on June 4th. The picnic is being funded by Waitrose who must be pleased as punch to have the Palace’s endorsement in this video. The guests will also apparently be given vouchers for a glass of Moët or a bottle of Cobra beer (the other sponsors of the event).