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.
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.