Some of John's earliest pen and ink cartoons were published in Punch in the early to mid 1950s, a magazine of humour and satire that ran from 1841 to 2002.
He created full colour watercolour cover designs for the re-launch issue of Punch in 1996.
It is interesting to see in this one magazine how the style of John's work developed over time.
Above: Cartoon for Punch 1956 © John Glashan
Above: Cartoon for Punch 1958 © John Glashan