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Sam Laidlaw
William Samuel Hugh Laidlaw (born 3 January 1956, Kensington) is the former chief executive officer of Centrica, the British natural gas and electricity company. 
Early life.
He is the son of Sir Christopher Laidlaw (1922–2010), former deputy chairman of BP. Sam Laidlaw attended Eton College and studied law at Gonville and Caius College, Cambridge, gaining an MA in 1977. He qualified as a solicitor in 1979 with the Macfarlanes law company. He obtained an MBA in 1981 from the INSEAD Business
Patrick Laidlaw
Sir Patrick Playfair Laidlaw (28 September 1881 – 19 March 1940) was a Scottish virologist.
Biography.
Laidlaw was born in Glasgow, the son of Robert Laidlaw, M.D., at that time Superintendent of the Glasgow Medical Mission. He was educated at Leys School, Cambridge and St. John’s College, Cambridge.
From 1920–23, he studied the properties of histamine at the Wellcome Physiological Research Laboratories after which he went to Guy's Hospital as a lecturer in experimental pathology. As a virologist at