Who was the british pm in 1948?

Maurice Harold Macmillan was the Prime Minister of the United Kingdom in 1958.

Harold Macmillan was the Prime Minister of the United Kingdom of Great Britain and Northern Ireland from 1957 January 10 to 1963 October 18 as leader of the Conservative Party. After Anthony Eden resigned over the Suez Canal crisis, Macmillan was appointed as prime minister by Queen Elizabeth II.

Macmillan improved relations with the US and USSR after the Suez Crisis, visiting leaders of each nation. He pushed for increased development into the UK's nuclear program. This indirectly led to the Windscale fire, causing the UK's most severe nuclear accident to date, and also to the UK's successful nuclear bomb test on 1957 November 8. This would also lead to the Partial test Ban Treaty of 1963, signed by the US, USSR and the UK.

Macmillan also increased the pace of decolonization, granting independence to a handful of countries, most of which remained within the commonwealth. As a result, South Africa would leave the commonwealth in 1961, South Africa having earlier gained independence in 1910. He also helped formed the European Free Trade Association, but was unable to get the UK into the European Economic Community.

The Profumo Affair of 1963 damaged both the credibility of Macmillan's government and his personal health. Macmillan would resign, with Douglas-Home succeeding him.

The United Kingdom of Great Britain and Northern Ireland contains England, Scotland, Wales and Northern Ireland, which do not have separate prime ministers