Pat was the owner of a small black and white cat named Jess, who always travelled with him. Other characters included the postmistress, Mrs. Goggins, Ted Glen, Granny Dryden and the vicar, Rev Timms. The jaunty theme tune was a big hit, which has enjoyed a revival as a mobile phone ring tone
Several books based around the series were also produced. Merchandise featuring the image of Postman Pat is still popular among children (as well as with parents who grew up watching the programme).