{{Use dmy dates|date=April 2025}} {{Use British English|date=May 2014}} The 1975 '''Mason Review''' was a review of UK defence policy conducted by the Labour Government's Secretary of State for Defence, Roy Mason.<ref name="Review">{{cite book | title=The Defence Review Proposals: Second Report from the Expenditure Committee : Session 1974-75 : Together with the Minutes of the Evidence Taken on 21st January 1975 and Part of the Minutes of the Evidence Taken on 4th and 11th February 1975 Before the Defence and External Affairs Sub-committee | publisher=H.M. Stationery Office | year=1975 | pages=78 | isbn=9780100225954}}</ref> The review was influenced by a Government decision to reduce the defence budget to 4.5% of Gross Domestic Product.<ref name="guide">{{cite web | url=https://commonslibrary.parliament.uk/research-briefings/sn05714/| title=A Brief Guide to Previous British Defence Review | publisher=UK Parliament | date=2010-10-19 | accessdate=2013-06-29 | author=Taylor, Claire | pages=6}}</ref> The review was intended to anticipate defence needs during the period 1975–1985.

== Summary == The report made clear that despite the process of East−West Détente which was then gathering pace, the principal threat to the security of the UK remained the Soviet Union. Priority for UK defence resources was given to NATO commitments.

This led to four capabilities being emphasised in the review:

*UK contribution to NATO front-line forces in Germany, including the British Army on the Rhine. *Anti-submarine warfare forces in the eastern Atlantic *Home defence *UK nuclear deterrent

To support this focus on Cold War theatres, most British forces in the Mediterranean Sea were to be reduced, and there were to be further reductions in the Far East.

==See also== *1966 Defence White Paper *1981 Defence White Paper *Options for Change (1990 restructuring) *Military of the United Kingdom

==References== {{Reflist}}

==External links== * [http://filestore.nationalarchives.gov.uk/pdfs/small/cab-129-181-c-21.pdf Draft Copy of 1975 Defence Review]{{Deadlink|date=May 2026}}

{{UK Defence Review}}

Category:1975 documents Category:History of the Labour Party (UK) Category:Defence white papers Category:United Kingdom defence procurement Category:1975 in British politics Category:1975 in military history Category:20th-century military history of the United Kingdom