The usual cover price of the Daily Mail has increased by 10 pence. If as a subscriber you present a Mail voucher for a copy of the newspaper at Waitrose alongside a 'cash' purchase, you will be charged that extra 10 pence. Moral of the story? Get the Daily Mail on its own using the voucher and you will be charged nothing. If you have other purchases, make them immediately before or after and apologise to the person behind you in the queue. Do not mention my name or book.