London Zoo features on more Underground posters than any other subject and Paine’s Zoo poster (1921) is one of the most popular.

In 2013 the penguins poster inspired the making of an animation film Penguins Calling directed by Anastasia Psaltou who wrote, ‘The retro feel and the simplicity of the colours in Charles Paine’s poster made it irresistible to me.   It gave me great inspiration for creating a fun and colourful animation’.  The film was made to mark the 150th anniversary of the London Underground. It can be viewed (2022) at https://www.youtube.com/watch?v=HzBOraAoTcA