A set of new stamps have been launched by Royal Mail that feature mythical creatures. The stamps include a fire breathing dragon, a giant carrying a bolder, a grey unicorn, a mermaid and a pixie riding a snail. They have been designed by artist Dave McKean and novelist Neil Gaiman. The aim of the new stamps was to bring together some of the well known characters from ancient folklore and legend. Pictured are two of the designs for the 1st class stamps.