Kate Elizabeth Jones (called Kate in videos) is the mother of Julie.
- According to The Joneses trivia:
- She was born on March 24th, 1977.
- Her star sign was Aries.
- She was born in Atlanta, Georgia, USA.
- She has three older sisters and one older brother when she was growing up.
- She works at Islington Borough Services in South Brackney.
- She enjoys working there.
- She first met up with Simon after she finds him gorgeous, much to her mum and dad's agreement. Although Simon's own dad despised her.
- She and Simon married on February 14th, 1997.
- Her favourite show is Prized Apart.
- Her favourite artist is Michael Jackson.