Fanny was born into an upperclass family in England, she attended boarding school at 8 and boarded in a dorm with Tilly and Miranda when they were 9
Fanny meets Miranda with Tilly for a "Girl's Lunch". On first arrival Fanny refers to Miranda as "Queen Kong", which is a regular name Miranda's "Posh-Friends" associated her with throughout the sit-com. Whilst having lunch, they inform Miranda of their big news; they are both engaged. They then discuss wedding shopping plans and where they plan to meet.
- Despite being called a main character, she has only appeared in the sit-com twice, and is therefore considered to be more of a recurring character.
- Originally,Fanny was going to be a main character, but due to other work commitments, Katy Wix could not be a main character and instead returned to Not Going Out, which Miranda too had appeared in.
- She is a reoccuring actor (playing various characters) along with Sarah Hadland , who plays Stevie , in the British TV series Horrible Histories.