The Prime Minister was unable to secure a majority Government after the results of her snap election revealed a shortfall and overall lost in seats, winning only 318 seats.
May called the early election when her party was comfortably ahead in the polls, in the hope of increasing her majority and strengthening Britain's hand in exit talks with the EU.
Some Conservative lawmakers called for May's joint chiefs of staff, Fiona Hill and Nick Timothy, to be sacked for their key role in the election campaign.
"May fights to remain PM", headlined the Conservative-supporting Daily Telegraph headlined, while the Daily Mail said: "Tories turn on Theresa".
They said Jeremy Corbyn is an honest and straight talking politician who should form the next government with progressive parties.
The distraction of ongoing negotiations in London and the strength of the vote for each party in Thursday's election will do little to encourage compromise, according to political analysts.
The DUP also sees Thursday's election result as a victory for pro-British unionists in the struggle with Irish nationalists.
It would not only be an election but an election all about her - a landslide, a coronation securing her hard Brexit mandate.
The pound on Friday fell 1.7 per cent against the United States dollar and 1.4 per cent against the euro.
Sources close to the prime minister say that she understands the concerns of liberal Tories like Ruth Davidson about the possible price of a deal with the DUP, and she will not offer them any promises to reduce the rights of the lesbian, gay, bisexual, trangender or intersexual community, or to reduce womens' rights to abortion. The main opposition Labour Party took 262.
The DUP has refused to give details in public of what concessions it might seek, and did not respond to a request for comment. "You will have a very fractious parliament". "If we are to deal with the challenges and seize the opportunities that leaving the European Union presents then we need our own local Ministers lobbying London and Brussels".
When the protesters arrived at the gates of Downing Street they were met by a wall of uniformed police officers. She sought to deflect pressure onto Corbyn, arguing he had a weak record on security matters.
The Times newspaper's front page declared "May stares into the abyss".
The EU's chief negotiator said the bloc's stance on Brexit and the timetable for the talks were clear, but the divorce negotiations should only start when Britain is ready.
The arrangement with the DUP will make governing easier, but it makes some Conservatives uneasy. "The task of restoring orderly government in order to make sense of Brexit is now a national emergency, and it falls to them".
After confirming on Friday that her top five ministers, including finance minister Philip Hammond, would keep their jobs, May must name the rest of her team, who will take on one of the most demanding jobs in recent British political history.
European Union leaders expressed fears that May's shock loss of her majority would delay the Brexit talks, due to begin on June 19, and so raise the risk of negotiations failing.
On the doorstep of her official Downing Street residence, May said she could rely in parliament on the support of her "friends" in Northern Ireland's Democratic Unionist Party after her governing Conservatives failed to win a majority.
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