Local and mayoral elections in England will be postponed for a year to May 2021 due to the coronavirus outbreak.
Downing Street said it would be impractical to hold the elections as planned, as they would come during the peak of the spread of the virus.
Polls were due in 118 English councils, the London Assembly and seven English regional mayors.
Voting was also due to take place for the London mayor and police and crime commissioners in England and Wales.
It comes after the Electoral Commission said on Thursday the elections should be delayed until the autumn to “mitigate” the impact of the virus.
Ten people have died with the virus, with 798 cases confirmed UK-wide.
The Cabinet Office said it would be bringing forward legislation to enact the delay in England, and would work to ensure the Welsh authorities had the same powers.
The last time elections were delayed was in 2001, during the foot and mouth outbreak.
