South West Norfolk is a constituency[n 1] represented in the House of Commons of the UK Parliament since 2024 by Terry Jermy of the Labour Party.

It was previously represented by Liz Truss of the Conservative Party (the shortest-serving UK Prime Minister in British history; serving as head of government for 49 days in 2022) between 2010 and 2024.

[2] The population is largely white and predominantly homeowners, with incomes and house prices slightly below the UK average.

South West Norfolk had been held solidly by Conservatives from 1964 to 2024, but for twenty years prior; it had been ultra-marginal.

Dye died at the end of 1958, and at the by-election, the Labour Party candidate Albert Hilton retained the seat with an increased majority of 1,354 votes.

The Conservative Party selected Christopher Fraser, former MP for Mid Dorset and Poole North and he was elected with a comfortable majority of over 10,000 votes.

In 2022, Truss won the 2022 Conservative leadership election and was subsequently appointed Prime Minister on 6 September.

Thetford transferred back from South Norfolk, together with areas comprising the former Rural District of Wayland, including Attleborough.