Dr John Kenneth Hasler


25/08/1898 to 02/06/1981

Place of birth: Mussoorie, Uttaranchai, India

Nationality: British

CRN: 715367

Education and qualifications

General education

Eltham College, Mottingham, London (previously the School for the Sons of Missionaries), playng rugby with the 1st XV; Middlesex Hospital Medical School, playing hockey for the hospital over several years

Primary medical qualification(s)


Initial Fellowship and type

FFARCS by Election

Year of Fellowship


Other qualification(s)

MBBS, London, 1924; DA(RCP&S), 1937

Professional life and career

Postgraduate career

After qualifying he was sequentially casualty medical officer, resident anaesthetist and senior resident anaesthetist at the Middlesex. By 1927 he was honorary anaesthetist at St Mark’s Hospital for the rectum, the Metropolitan and Dreadnought Hospitals, and later added the West London Hospital. During WW2 he worked in the western sector of the Emergency Medical Service, and then continued his earlier appointments until 1950, when he became consultant anaesthetist to the West Dorset Hospitals, retiring in 1963.

Professional interests and activities

Had published papers on a range of topics by 1934, but nothing traced thereafter.

Other biographical information

His father was a Baptist Missionary in India. Having started his medical studies in 1916, Hasler joined the Liverpool Regiment as a private in 1917 and won the Military Medal in 1918 before returning to his studies. He does not appear to have ever used the post nominal ‘MM’ himself, but it seems appropriate to include it below. Keenly interested in natural history, he was involved with several relevant societies, and also served his school’s old boy association, acting as president during WW2.

Author and sources

Author: Prof Tony Wildsmith

Sources and any other comments: Medical Directory | Ancestry.co.uk | Archives at Eltham College, notably for the photograph and an obituary