headlines Graphicat takes Hong Kong to London HongKong Post's latest special stamp issue, designed by Graphicat, combines silhouettes of distinctive landmarks of both Hong Kong and London to symbolise harmonious ties between the two cities. Released to commemorate Hong Kong Post's participation in London 2010, part of the Festival of Stamps which takes place in London just once every ten years, the stamp is for sale at Hong Kong post offices from 8 May.