- Creator Backlash: While John Cunliffe enjoyed writing the show, he voiced distain for a lot of the dumbed down tie-in books and merchandise as the show became popular, a lot of which he didn't have a hand in and believed handled the work poorly. He created Rosie and Jim as an alternate piece he had more creative control over, though still continued writing for Pat's 90s series and specials, multiple books, and contributed a couple stories for the 2004 revival.
- He Also Did: John Cunliffe and Ivor Wood. The former went on to create a Ragdoll Productions TV series called Rosie and Jim, and the latter also did the animations for The Herbs, Paddington Bear and the short-lived Bertha. Additionally, the studio that made Special Delivery Service is Cosgrove Hall, who also brought you Count Duckula, Noddy's Toyland Adventures, and the evergreen favorite, Danger Mouse.
- Keep Circulating the Tapes: The series is remarkably hard to come across in North America, even the American dub that was made for out-of-print VHS releases from Celebrity Video. The only DVD release the series has ever got in North America is the CGI movie. The mid-2000s era episodes (with the other theme tune) aired on qubo for a while, though. With the advent of Peacock, almost all Postman Pat episodes are now available for streaming in the United States, with the first two seasons being suspiciously absent (making their absence even more conspicuous is the fact that the original stop-motion Noddy's Toyland Adventures episodes are on Peacock, along with Make Way For Noddy and Noddy In Toyland; Noddy, Toyland Detective is still held by Netflix).
- No Export for You: ABC, 123, and Read Along had no American dub. Few countries outside the UK actually received the said specials.
- Non-Singing Voice: In the movie, Pat's singing voice is provided by Ronan Keating, who also appears as himself auditioning for You're The One in the beginning.
- The Other Darrin:
- Starting from Postman Pat Takes The Bus, Carole Boyd, a famous actress, took over voicing all the females and children except Granny Dryden, who was still played by Ken Barrie.
- Ken Barrie played the role of Pat until Special Delivery Service, when he was replaced by Lewis Macleod, although he still retained his supporting roles as Alf, Ted Glen, PC Selby and Reverend Timms. He was dropped from the show completely in 2013, meaning Macleod now voices Alf, Bradley Clarkson now voices Ted and Selby and Dan Milne now voices Timms.
- Playing Against Type: David Tennant as Wilf in the movie.
- Recursive Adaptation: Read Along With Postman Pat adapts a couple of storybooks to screen.
- Screwed by the Lawyers: Royal Mail dropped Postman Pat as their mascot in 2000, and as such, Pat's van no longer has the Royal Mail logo on it.
- Sequel Gap: The original first season was made in 1981. Though a lot of books and tie-in media were made in the years following, it wouldn't be until 1991, a decade later, that more episodes of the show would be made, consisting of four feature length cartoons and finally a second season in 1996. Another special would be made in 2003, which served as a lead in to a revival series the following year. Seasons three to five were ongoing, though Special Delivery seasons had breaks of three to four years between each.
- Talking to Himself: Ken Barrie voiced all the characters in the 1980s, including the females...
- What Could Have Been: There are a decent amount of things in the movie that didn't make the cut:
- Wilf, Sara, and Simon Cowbell were originally going to be voiced by different voice actors very early in production, but at the last minute, they were replaced by the ones we're used to.
- The 2011 storyboard reel and the first draft of the film has the same plot, but it is entirely different in comparison to the final version. The reason why the film had to be rewritten was because according to the director, the writing was bad for a full-length film. Imagine what would happen if the first draft made it to the final cut...
Trivia / Postman Pat