Her paternal grandparents are Patricia, 2nd Countess Mountbatten of Burma, and John, 7th Baron Brabourne.
She is the great-granddaughter of Louis, 1st Earl Mountbatten of Burma, First Sea Lord and the last Viceroy of India.
Knatchbull was educated at Benenden School[1] and graduated with a Bachelor of Arts in philosophy from the University of Leeds in 2015.
[5][6] In 2019, Knatchbull launched The Deck, the first female-only tailor on Savile Row.
[7][8][9][10] The Deck has made suits for India Hicks, Sarah, Duchess of York, Adjoa Andoh, Elizabeth Hurley, Jodie Whittaker, Melanie C and Olivia Arben.