She was born in Kensington on St David's Day in 1921, to Winifred de Renzy-Martin (née Hull) and her husband Edward, a lieutenant colonel in the army.
[2] In 1940, following the outbreak of the Second World War, she left her PPE studies at Somerville College, Oxford to attend a nursing course run by Lady Louis Mountbatten.
She stayed at the London Hospital Students' Hostel on Whitechapel Road with 180 men and only one other woman and worked in the East End throughout the Blitz, distributing first aid, food and drink.
[2] The Sinclair-Loutits had three children and lived in Canada, Thailand, Paris and Morocco, where Kenneth was stationed working as an adviser to UNICEF, before moving back to London in 1972.
[5] Sinclair-Loutit settled in Islington, qualified as a psychiatric social worker at the Polytechnic of North London and worked in north-London hospitals.