T
The Daily Insight

Cosima Thomasina Diamond

Author

Henry Morales

Published Feb 12, 2026

Cosima Thomasina Diamond is well known as a British Internet personality and celebrity kid. Cosima Thomasina Diamond catches the attention of the public being the daughter of a famous British food writer Nigella Lawson and English journalist John Diamond.

Quick Facts: Cosima Thomasina Diamond

NameCosima Thomasina Diamond
Birthday1994
Age26
Genderfemale
NationalityBritish
Ethnicitywhite
ProfessionCelebrity daughter
ParentsNigella Lawson and John Diamond
Siblings1
Net Worthunder review
Married/SingleSingle
EducationLatymer Upper School

10 Facts of Cosima Thomasina Diamond

  1. Cosima Thomasina Diamond is well known as a British Internet personality and celebrity kid.
  2. Cosima Thomasina Diamond catches the attention of the public being the daughter of a famous British food writer Nigella Lawson and English journalist John Diamond.
  3. She was born in January 1994, in Hammersmith, London, England. At the time of writing this article, she is currently at the age of 26.
  4. She holds a British nationality and is of white ethnicity.
  5. Cosima Thomasina Diamond is the daughter of Nigella Lawson and John Diamond. She has a brother named Bruno Paul Diamond.
  6. Her father John Diamond passed away on March 2, 2001, due to throat cancer.
  7. Talking about her educational qualifications, she attended the Latymer Upper School and passed her schooling.
  8. She stands with an appealing height and has a good body weight.
  9. Cosima Thomasina Diamond is living a happy and luxurious life in London, United Kingdom.
  10. She is enjoying her mom’s net worth as her mom’s net worth is  $20 million dollars.