|The 2012 stamps.|
However, back in 1993 Royal Mail issued 'Greetings Stamps', a set of ten stamps that featured illustrations of famous characters including Rupert the Bear, William (from the William books) and Wilfred and Teacher, from The Bash Street Kids!
Yes, Wilfred and Teacher got first class treatment with this stamp, which features Wilfred teasing Teacher with an apple. Artwork is by David Sutherland. I'm not sure if British comics or characters have featured on any other stamps, these are the only two occasions I am aware of but if you do know of any more please leave a comment in the comments section below.
|The postcard accompanying the stamp. The actual stamp can be seen at the top of this post.|