Thomas Walker Hobart Inskip, 1st Viscount Caldecote was a British politician who served in many legal posts, culminating in serving as Lord Chancellor from 1939 until 1940. Despite legal posts dominating his career for all but four years, he is most prominently remembered for serving as Minister for Coordination of Defence from 1936 until 1939.

He was first appointed Solicitor General in 1922 and would hold this post for the next six years with one short interruption. A staunch Protestant, he first came to high attention when in 1927 he joined with the Home Secretary Sir William Joynson-Hicks in attacking the proposed new version of the Book of Common Prayer. The law required Parliament to approve such revisions, normally regarded as a formality, but when the Prayer Book came before the House of Commons Inskip argued strongly against its adoption as he felt it strayed far from the Protestant principles of the Church of England. The debate on the Prayer Book is regarded as one of the most eloquent ever seen in the Commons, and resulted in the rejection of the Prayer Book. A revised version was submitted in 1928 but rejected again. However the Church of England Convocation then declared an emergency and used this as a pretext to use the new Prayer Book for many decades afterwards.

In 1928 Inskip was promoted to Attorney General which he held until the Conservative government fell in 1929. When Ramsay MacDonald formed his National Government in 1931, Inskip returned to the role of Solicitor General but the following year a vacancy occurred and he once more resumed his work as Attorney General.

Despite an exclusively legal track record, in 1936 Inskip became the first Minister for Coordination of Defence. His appointment to this particular office was highly controversial. Winston Churchill had long campaigned for such an office and when its creation was announced, most expected Churchill to be appointed. When Inskip was named a famous remark was "This is the most cynical appointment since Caligula made his horse a consul",¹ His appointment is now regarded as a sign of caution by Prime Minister Stanley Baldwin who did not wish to someone like Churchill who would have been interpreted by foreign powers as a sign of the United Kingdom preparing for war, as well as a desire to avoid taking onboard a controversial and radical minister.

Inskip's tenure at Defence remains controversial, with some arguing that he did much to push Britain's rearmament before the outbreak of the Second World War but others argue he was largely ineffectual. In early 1939 he was replaced by First Sea Lord Lord Chatfield, and moved to become Secretary of State for Dominion Affairs. At the outbreak of war he was raised to the peerage in 1939 as Viscount Caldecote and made Lord Chancellor, but in May 1940 he was once more became Secretary of State for Dominion Affairs to make room for the marginalising of Sir John Simon in the new government of Churchill.

After leaving ministerial office he served as Lord Chief Justice of England and Wales from 1940 until 1946.

|- style="text-align: center;" | width="30%" |Preceded by:
William Jowitt | width="40%" style="text-align: center;" |Attorney General
1932–1936 | width="30%" |Succeeded by:
Donald Bradley Somervell

|- style="text-align: center;" | width="30%" |Preceded by:
— | width="40%" style="text-align: center;" |Minister for Coordination of Defence
1936–1939 | width="30%" |Succeeded by:
Ernle Chatfield

|- style="text-align: center;" | width="30%" |Preceded by:
Malcolm MacDonald | width="40%" style="text-align: center;" |Secretary of State for Dominion Affairs
1939 | width="30%" |Succeeded by:
Anthony Eden

|- style="text-align: center;" | width="30%" |Preceded by:
The Lord Maugham | width="40%" style="text-align: center;" |Lord Chancellor
1939–1940 | width="30%" |Succeeded by:
The Viscount Simon

|- style="text-align: center;" | width="30%" |Preceded by:
Anthony Eden | width="40%" style="text-align: center;" |Secretary of State for Dominion Affairs
1940 | width="30%" |Succeeded by:
Viscount Cranborne

|- style="text-align: center;" | width="30%" |Preceded by:
The Earl Stanhope | width="40%" style="text-align: center;" |Leader of the House of Lords
1940 | width="30%" |Succeeded by:
The Viscount Halifax

|- style="text-align: center;" | width="30%" |Preceded by:
The Viscount Hewart | width="40%" style="text-align: center;" |Lord Chief Justice of England and Wales
1940–1946 | width="30%" |Succeeded by:
The Lord Goddard

Preceded by: New Creation

Viscount Caldecote

Succeeded by: Robert Andrew Inskip

Notes

¹ This quote has been made on many occasions and the original source is unclear. The highly influential polemic Guilty Men (whose relevant chapter is entitled "Caligula's Horse") attributes it to a "great statesman" (page 74), whom some have surmised was Churchill. However Stewart, Graham Burying Caesar: Churchill, Chamberlain and the Battle for the Tory Party (London; Phoenix, 1999) (ISBN 0-75381-060-3), page 487 attributes the originator of the quote to Churchill's non-politician friend Professor Frederick Lindemann.