Senior Conservatives told May that if the advisors didn't go, they would mount a leadership challenge.
Once negotiations begin, Theresa May's slender majority will bring new challenges.
No party gained an outright majority so there will need to be a deal before the prime minister is confirmed.
Europe's press eviscerated Theresa May for Britain's election 'madness.'
The hung parliament could delay Brexit negotiations, as the surprise result hammered the British pound.
Here are five key takeaways as U.K. politics enters an period of extraordinary uncertainty.
If the polls turn out to be true, it would represent a major embarrassment for Prime Minister Theresa May, who called the vote to try to build on her current 330 seats by a substantial margin.
The final opinion polls show a healthy lead for the Conservative Party but were badly wrong two years ago.
Deadly attacks in London and Manchester had perpetrators known to intelligence. Did tight budgets hinder security services in preventing the violence?
A hard-fought campaign has led to a surprising surge in support for left-wing opposition leader Jeremy Corbyn.
Brits say they now regret voting to leave European Union
America joins Nicaragua and Syria as non-signatories to the landmark 2015 agreement.
If Theresa May gets a good Conservative result in Scotland, she may well claim the case for an independence vote has been weakened.
Leader of the centrist Liberal Democrats on what his religion teaches him about politics and how his party plans to recover from 2015's electoral collapse.
The president said he had spoken with the U.K. prime minister about the leaking of information related to the Manchester terror attack.
The Opinium and ComRes polls published on Saturday showed the lead of May's ruling Conservative Party had slipped to 10 and 12 percentage points respectively.
The British government has repeatedly condemned leaks to the American press of information relating to the ongoing investigation.
A bomb attack in England's northwest on Monday following an Ariana Grande show killed 22 people.