The Week: Advertising news - PM responds to charity ad

Gordon Brown has arranged a meeting with The Autism Trust's founder, Polly Tommey, after an ad for the charity encouraged the Prime Minister to call her.

Dye Holloway Murray created the ads, one of which said: "Dear Gordon Brown, I can save you £508 million a year. Please call me on 020 7147 9980. Many thanks, Polly Tommey." The billboards went up on 23 March and Brown responded four days later.