Kitty read Modern Languages (French, German and Czech) at Cambridge University. She worked in office administration and English Language teaching while bringing up a family. Later she trained as a primary school teacher, specialising in French and the education of visually impaired children.

Kitty helped Peregrine set up his practice in 1994. She was the office manager, becoming a partner and financial director when the LLP was formed in 2012. Recently she has handed over some of her responsibilities but is continuing as Personnel Manager and contributing to the management of the practice.