UK MPs who were granted peerages

John Boyd Orr, 1st Baron Boyd-Orr, (23 September 1880 – 25 June 1971), styled Sir John Boyd Orr from 1935 to 1949, was a Scottish teacher, medical doctor, biologist, nutritional physiologist, politician, businessman and farmer who was awarded the Nobel Peace Prize for his scientific research into nutrition and his work as the first Director-General of the United Nations Food and Agriculture Organization (FAO).
He was the co-founder and the first President (1960–1971) of the World Academy of Art and Science (WAAS). In 1945, he was elected President of the National Peace Council and was President of the World Union of Peace Organisations and the World Movement for World Federal Government.

Thomas Francis Fremantle, 1st Baron Cottesloe, 2nd Baron Fremantle, (11 March 1798 – 3 December 1890), known as Sir Thomas Fremantle, Bt, between 1821 and 1874, was a British Tory politician.

John Granville Morrison, 1st Baron Margadale, TD, DL (16 December 1906 – 25 May 1996) was a British landowner and Conservative Party politician. An MP from 1942 to 1965, he notably served as Chairman of the 1922 Committee between 1955 and 1964. He was the last non-royal person to receive a hereditary barony.

Thomas Robert Dewar, 1st Baron Dewar (6 January 1864 – 11 April 1930) was a Scottish whisky distiller who, along with his brother John Dewar, built their family label, Dewar's, into an international success. They blended their whisky to make it more appealing to the international palate and Dewar demonstrated particular skills in marketing, travelling the world to find new markets and promote his product, exploiting romantic images of Scotland and tartan in his advertising.