Cameron is the elder daughter of Sir Reginald Sheffield, 8th Baronet,[3] and Annabel Lucy Veronica Jones.

Cameron is a great-granddaughter of Conservative Member of Parliament Sir Berkeley Sheffield and, through him, is a distant cousin of model and actress Cara Delevingne.

Her great-grandparents also include the writer Enid Bagnold and her husband Sir Roderick Jones, head of Reuters.

Ivan was born with a rare combination of cerebral palsy and severe epilepsy and died at the age of six at St Mary's Hospital, London.

From 2011 to 2015 Cameron was on the judging panel for the Vogue Fashion Fund alongside Victoria Beckham, Alexandra Shulman, and Lisa Armstrong.

[17] In 2017 Cameron founded Cefinn, a womenswear brand based in London[18] that launched its first collection in February of that year.

[20] Cameron has volunteered for Dress for Success, a nonprofit organisation that gives free clothes and advice about job interviews to unemployed women.

In March 2013, after visiting Syrian refugees in Lebanon, Cameron said: "As a mother, it is horrifying to hear the harrowing stories from the children I met today, no child should ever experience what they have.