Kate is a temporary barmaid at The Archer and becomes Jonny's new girlfriend after he has split up with Janet.

Having a lot in common with Jonny, especially his love of biscuits, she and Jonny are almost constantly having sex. None of the others are fond of her, and after Gaz tries to seduce her to break up their relationship, she resolves to take Jonny away from them and they leave Janet's house together. However, Jonny quickly dumps her when Kate asks him to leave his beer behind. Kate is possessive towards Jonny and her attitude to his friends is patronising. She does a wicked parody of them, particularly Janet, to show Jonny how pathetic they are. Janet is hurt because the parody is so true