She was an early exponent of female leadership in the Scout movement and played a leading role in the introduction of the Wolf Cub programme for younger boys, both in the United Kingdom and in France.
[3] The family were frequent visitors to St Moritz in the Swiss Alps; Barclay was an enthusiastic tobogganist and one of the few females to tackle the Cresta Run, often dressed in skirts or riding jodhpurs.
She accepted Baden-Powell's offer as her war work with the British Red Cross at a hospital in Netley in Hampshire was becoming impossible due to a pre-war knee injury incurred whilst skiing.
A recent convert to Roman Catholicism, Barclay spent a brief spell trying her vocation with the Daughters of Charity of St. Vincent de Paul.
[12] Barclay returned to England before the start of World War II and lived in Felpham on the south coast from around 1938 and in 1939–1940 joined her brother, the Rev Cyril Charles Barclay (Vicar of Helmsley) with his wife Rose and daughter Mary-Rose, in a huge vicarage (now the North York Moors Trust) in the market town of Helmsley North Yorkshire, she started a small nursery school with her friend Ninette Hoffet which they ran in the vicarage, she later returned to The Midway, Felpham, long before the end of the war.
After living in London and Seaview on the Isle of Wight where she began to lose her eyesight, she ended her days at Sheringham in Norfolk, being cared for by her niece Betty.