Benham's royal engagement cover

Benham Covers were hot off the mark in producing a souvenir to mark the engagement of Prince William and Kate Middleton.
Their cover features an image of the couple attending a friend’s wedding shortly before the announcement was made in November.
It features the 27p Prince William stamp from the 2000 miniature sheet marking the 100th birthday of the Queen Mother, along with a 17p Machin, and is cancelled with a London SW pictorial postmark showing Buckingham Palace.