This month, Art on a Postcard, the fundraising arm of the Hepatitis C Trust, will transform into Photography on a Postcard with an exhibition at The Print Space in east London featuring more than 1,000 postcard-sized works by photographers such as Martin Parr, Wolfgang Tillmans, Jenny Lewis and Edmund Clark. The show is free, but £50 buys entry to a lottery in which the ticket holder is guaranteed to win one of the photographs at the end of the show. “Our aim is to eliminate hepatitis C by the year 2030,” says Art on a Postcard director Gemma Peppe, who had hepatitis C for 26 years before being cured. Among other activities, the trust works with the NHS to improve prevention, diagnosis and treatment of this disease. All profits from the sale will go to the Hepatitis C Trust.