And we're off!published at 07:15 British Summer Time 4 May 2017
Polls are now open around the country and will close at 22:00 BST.
A total of 4,851 council seats are up for grabs in 88 councils - all of those in Scotland and Wales, plus 34 in England, including 27 counties.
Six new "metro mayors" will be elected, covering areas including Greater Manchester, the West Midlands and the West of England.