Lt Gen The Hon Sir Thomas Boyd-Carpenter KBE was Commanding Officer of the 1st Battalion, Scots Guards between (1979-81). He was Commander of the 24 Infantry Brigade between (1983-84). He was Chief of Staff of the British Army on the Rhine (1988-89) and his final post was Deputy Chief of Defence Staff (Programmes and Personnel) in the Ministry of Defence. He was invested as a Knight Commander, Order of the British Empire (K.B.E.) in 1993. He retired from the military in 1996. He is chair of the Government's Social Security Advisory Committee  and the Rail Regulator. He is Chairman of Moorfields Eye Hospital NHS Trust, Chairman of the Lord Chancellor's Advisory Board on Family Law and works as a senior consultant with the management communications company People in Business which works with BP, British Airways, Coca-Cola, Glaxo SmithKline, Manganese Bronz, Manpower, Premier Oil, Unilever and others. He is the brother of Sarah Hogg (head of the Prime Minister's Policy Unit from 1990-97).
- "Social Security Advisory Committee: Seventeenth Report 2004", Social Security Advisory Committee website, accessed November 2008
- "Annual Report 1997-1998: Regulating the railway in the public interest", Office of Rail Regulation website, accessed November 2008
- "About Us", People in Business website, accessed November 2008