Health Secretary Matt Hancock has insisted a general election could be "catastrophic" for his Conservative party.

The health secretary, who joined the race to become the new Tory leader last week, has written in The Times today, external.

"These European elections show the risk if we go the wrong way but they also show the scale of opportunity if we change and look to the future," he wrote.

He added that the elections "have shown that there is no enthusiasm for socialism. But there is a gaping hole in British politics waiting to be filled by a Conservative Party led with energy and optimism."

Image source, PA

High profile candidates Rachel Johnson, the sister of Tory MP Boris, and former Labour cabinet minister Lord Andrew Adonis failed to win seats tonight.

Ms Johnson's Change UK party finished in seventh place in the South West region. Lord Adonis, who stood for Labour in the same region, saw his party finish fifth.

The Brexit party came top in the South West, winning three seats.

Image source, EPA

East Midlands

East of England

London

Northern Ireland

North East

North West

Scotland

South East

South West

Wales

West Midlands

Yorkshire and Humber

Here are the main developments away from the UK:

• The big power blocs of the centre-right and centre-left lost their combined majority in the European Parliament. "The monopoly of power is broken," said Denmark's Margrethe Vestager, the liberal candidate for the top post in the European Commission
• Europeans voted in their biggest numbers since 1994, bucking years of decline with a turnout just shy of 51%
• The Greens saw strong votes in Finland, Germany, France and Portugal
• The nationalist right had a patchy night, but enjoyed successes in Italy, where figurehead Matteo Salvini ran to victory, and in France, where Marine Le Pen defeated the Renaissance alliance of Mr Macron.

Image source, AFP/ Getty Images

Conservative Party leadership candidate Boris Johnson says the voters have delivered a "crushing rebuke" for his party.

Writing in the Daily Telegraph, external, he said the Conservatives risk being "dismissed" if it does not deliver Brexit.

Mr Johnson said voters had issued the party with a "final warning" as the Tories came fourth in Hillingdon, where he is an MP, and the Brexit Party emerged with the largest number of MEPs overall.

Eight candidates have declared they are standing for leader, after Theresa May said she would resign.

Read more here.

Adam Fleming
Brussels reporter

Image source, AFP/ Getty Images

The centre left and centre right parties do not have enough seats in the European Parliament to control the agenda.

To do that they will have to rely on support from the Greens and the much larger Liberal groups - which include French President Emmanuel Macron's MEPs.

Over the next couple of days it will be intriguing to see if the pro- EU groups will work together.

One of the biggest surprises is that the populists are not going to be marching on the European Parliament because they have not done as well as some expected.

The rise of the Green parties can partly be put on the shoulders of the young climate activist Greta Thunberg.

Green Party co-leader Sian Berry said her party was not just standing on a single issue in the European elections.

Laura Kuenssberg
BBC political editor

Image source, PA

The scrap has started.

Were these results an overwhelming cry for us to leave the EU whatever the cost?

Or a sign, with some slightly convoluted arithmetic, that the country now wants another referendum to stop Brexit all together?

Guess what, the situation is not quite so black and white, whatever you will hear in the coming hours about the meaning of these numbers.

Read Laura Kuenssberg's blog here.

Politics professor Philip Cowley says "this is basically the worst result" for both Labour and the Conservatives.

However, he cautions that "we don't know what the long term consequences of tonight will be."

He notes there is a difference between voting for a government and making a protest vote in the European elections.

There are no more result announcements expected to come in tonight.

Scotland takes longer to declare because the Western Isles will not begin counting until Monday morning.

Northern Ireland's three seats are likely to be allocated by late Tuesday afternoon.

A different system of proportional representation is used in Northern Ireland, meaning seats are allocated over a sequence of counts rather than all at once.

To find our more click here.

Image source, AFP/ Getty Images

The big centre-right and centre-left blocs in the European Parliament have lost their combined majority in the European Parliament amid an increase in support for liberals, Greens and nationalists.

The centre-right European People's Party remains the largest bloc, and is expected to form a pro-EU coalition.

The Liberals and Greens had a good night, while nationalists were set for victory in Italy and France.

Turnout was the highest for 20 years.

Click here for a round-up of what happened in the rest of Europe.

Image source, AFP

Sheffield's flamboyant former Lord Mayor Magid Magid has been elected an MEP by the Yorkshire and the Humber electorate.

A former refugee, Mr Magid was Sheffield City Council's first Green Party mayor and its youngest at 29.

He took to Twitter to thank voters after the result was announced:

Labour Party Chairman Ian Lavery says the party will be "disappointed" by the election results.

But he says the results have been worse and "a whiteout" for the Conservatives.

Speaking on BBC Radio 4, he told political correspondent Chris Mason: "We're the party who try to bring everyone together, it's been challenging trying to get that view across on the doorstep.

"What we haven't done is turn our back on the 48% (Remain voters) we haven't turned out back n the 52% (Leave voters).

"The reality is we're standing up for everybody in the country."