Labour leader Ed Miliband said he is "very pleased" his party has won both mayoral elections in Witney and Doncaster:
Very pleased that both Witney and Doncaster mayor have gone Labour... on my way to congratulate @ros4doncaster
Witney is David Cameron's constituency while Doncaster North is Miliband's.
UKIP leader Nigel Farage claimed a "sea change" in British politics as they gained more than 140 council seats in the local elections.
There is no question that the day belongs to UKIP and Nigel Farage. The party has gained over 100 seats and won about a quarter of the vote.
In an article for ITV News, the Conservative MP Adam Afriyie calls for a guarantee on an in-out EU referendum to deal with the UKIP threat.