The Donoughmore Commission (DC) was responsible for the creation of the Donoughmore Constitution in effect between 1931–47 in Ceylon (now called Sri Lanka). In 1931 there were approximately 12% Ceylonese Tamils, 12% Indian Tamils (migrant and immigrant workers employed in the Tea plantations established in the late 19th century), 65% Sinhalese, and ~3% Ceylon Moors. The British government had introduced a form of communal representation which a strong Tamil representation, out of proportion to the population of the Tamil community. The Sinhalese had been divided into Kandyan and low-country Sinhalese.
The commissioners were four British parliamentarians appointed by Sydney Webb, the first Labour Secretary of State for the Colonies the 13 November 1927. Their task was to draft a new constitution for Sri Lanka that would not only satisfy the aspirations of all the groups within the island, including British plantation owners, but also enable Sri Lanka to take its place as a partner in the socialist British empire that Webb envisioned.
Two of the Commissioners, Dr. Drummond-Shiels and Frances Butler, had been Labour Party London County Councillors for many years prior to entering Parliament and serving in the short-lived Lib-Lab government coalition stitched together by Lloyd George in 1926. They were serious-minded men in the traditional Labour "Christian Socialist" mould. Above all, they were missionaries for the equitable, socialist vision of the world Webb was proselytising. Lord Donoughmore, on the other hand, was a genial Liberal , best known for championing women's right to university education and a gourmet palate.