Voters in England are heading to the polls in a wide set of local and mayoral elections, along with a parliamentary by-election in Runcorn and Helsby.

The contests span 24 of England’s 317 councils and six mayoral authorities, with about 1,650 council seats on the line. The elections are also taking place in some of the most politically watched areas of the country, making them an important test of public mood after Labour’s landslide victory in last year’s general election.

The mayoral races are being held in the West of England, Cambridgeshire and Peterborough, Doncaster, North Tyneside, Hull and East Yorkshire, and Greater Lincolnshire. At the same time, the by-election in Runcorn and Helsby will choose a new MP after the resignation of former Labour member Mike Amesbury, who stepped down after being convicted of assaulting a constituent.

Polling stations opened at 07:00 BST and close at 22:00, with results expected overnight and on Friday. The BBC expects most counts to be completed by Friday evening. The local-election timetable is uneven because elections in some areas were postponed while local government is being reorganised.

The election map shows the continuing complexity of English local government. Voters are choosing councillors across county councils, unitary authorities, a metropolitan district and the Isles of Scilly, which has its own governance structure. The breadth of the vote means the results will be read not as a single national verdict but as a collection of local judgments on national parties.

Photo ID remains required for in-person voting, with more than 20 accepted forms, including passports, driving licences and Armed Forces Veteran Cards. That rule, now part of the voting process, is another detail that shapes turnout and public understanding of the ballot.

The vote also arrives at a moment when the main parties are still adjusting to the post-general-election landscape. Labour is defending a sweeping win, while opponents are looking for signs that dissatisfaction with the government can be translated into local gains. Because local elections often register protest votes more sharply than national ones, the results are likely to be read as an early indicator of how voters feel less than a year after the parliamentary election.

Scotland, Wales and Northern Ireland are not holding local elections on this date. That means the story is concentrated in England, but the political signal will still travel across the UK, especially if the results reveal sharp swings, fragmented turnout or strong performances by insurgent local campaigns.

The results will be read less as a single verdict than as a map of local discontent and local loyalty. Some councils may show whether voters are still willing to reward Labour after its national landslide, while others will measure how far the Conservatives have recovered from defeat. The Runcorn and Helsby by-election adds an extra layer because it is a direct parliamentary contest created by a misconduct case, not a routine local vote. Together, the races offer an early clue about whether the post-election political mood in England is settling or still volatile.

With turnout, local grievances and party loyalty all in play, the results should show whether the government and opposition are still reading the country correctly.