Ipsos

Ipsos is one of the world's largest market research and polling companies, founded in France in 1975, with operations in more than 90 countries. The company conducts public opinion surveys, audience research, and social tracking studies for governments, media organisations, and commercial clients globally. In the UK, Ipsos operates as Ipsos UK and is one of the major polling firms contracted by national newspapers and broadcasters for voting intention research. Ipsos has previously faced scrutiny over accuracy in general election polling, participating in the post-2015 and post-2019 British Polling Council inquiries into polling failures.

During the 2026 Welsh and Scottish election cycle, Ipsos conducted polling on Senedd and Holyrood voting intention cited alongside YouGov and PollCheck as part of the multi-source polling picture. In Wales, Ipsos polling tracked party support under the new closed-list PR system, informing projections for the 7 May result. Ipsos is distinct from Electoral Calculus and More in Common in that it provides raw voting intention polls rather than multi-level regression and post-stratification (MRP) models; its Welsh data contributed to PollCheck's aggregate alongside other pollsters. In July 2026, Ipsos published a light-hearted national preference measure (fieldwork 8-9 July) that put Count Binface at 33% against Nigel Farage on 21% in a forced head-to-head over the Clacton by-election, a novelty preference measure rather than constituency voting intention.