Liverpool actor Paul McGann goes in search of the North West's hidden war paintings. With 80 per cent of the national art collection in storage, there are thousands of hidden treasures in the basements and storerooms of our museums and galleries. McGann visits the Walker Art Gallery in his hometown and Manchester Art Gallery in search of the lost art of World War II. In Liverpool he is captivated by the work of Britain's youngest war artist and in Manchester he finds some long-lost depictions of the city's prodigious war effort. Show less