There are no elections in Scotland and Wales today. All 11 local authorities in Northern Ireland are holding elections, as are 248 of England’s 343 councils. To find out if elections – spanning metropolitan and district councils and unitary authorities – are happening in your area, head HERE.
What time do polls open and close?
Polling stations for the vote open at 7am and close at 10pm BST.
When will we have results?
Results for about 108 English councils are expected to be declared before 6am on Friday.
The remaining 140 are scheduled to come in throughout Friday, mostly between midday and 6pm BST.
The Northern Irish ones will take longer to come through because they have a more complicated voting system.
How are the seats currently split by party?
The Conservatives are defending the largest number of seats, with 4,906 Tory councillors up for re-election, compared with 2,113 for Labour.
The Liberal Democrats have 647 seats to defend, UKIP 176 and the Green Party 71.
There are also 512 seats held by independents being fought.
Which are the councils to watch?
Since the last time many of these seats were contested – which would have been in 2015 – a lot has changed.
Brexit happened, as did the disastrous snap election of 2017 – all which will impact these local elections and could see some interesting developments.
There are 30 unitary councils, including Bedford, Stoke-on-Trent, Redcar and Cleveland and York, which will be re-elected in their entirety.
Brighton will be a crucial one. After a series of defections and by-elections, the Conservatives are now the largest party, having overtaken Labour.
All of the 54 seats are up for grabs and the Green Party – which used to run the council between 2011 and 2015 – is also looking to boost its presence.
In Cheshire West and Chester, with all seats to be voted on, the council is on a knife-edge with both Labour and the Conservatives fighting to be the largest party.
Milton Keynes, Bolton, Calderdale and Blackpool may also switch hands, or the ruling party could lose its majority and surrender overall control.
A third of the council seats are up for grabs in Peterborough.