Postman

A Postman was a person whose job was to deliver mail.

In 2007, a postman arrived at the house of Carys Fletcher, who was possessed by Sex Gas. She tried to have sex with him but was stopped by Torchwood Three. (TV: Day One)

In the Dream Lord's dreamworld of Leadworth, 2015, the Eleventh Doctor, Amy Pond, and Rory Williams confronted the Eknodine, one of whom killed a passing postman. (TV: Amy's Choice)

In 2050, a postman named Patrick (as Starkey noted, similar to the famous children's character Postman Pat) was kidnapped by the Centuripede. He was later rescued by K9 Mark 2 and his team. (TV: The Last Oak Tree)