The aid group said it would create an independent commission which will have the power to access records and interview staff in a bid to stamp out abuse and impose stricter controls on employees.
"From the bottom of my heart I am asking for forgiveness", she added.
Helen Evans, who was in charge of investigating allegations against Oxfam staff members between 2012 and 2015, told Channel Four television that abuse cases she had heard of included a woman who had been coerced to have sex in exchange for aid.
"Oxfam has agreed to withdraw from bidding for any new UK Government funding until (the Department for International Development) is satisfied that they can meet the high standards we expect of our partners", Mordaunt said in a statement on Friday.
'There are hundreds of good, fearless and compassionate people working for Oxfam around the world.
The new plan comes a week after revelations that Oxfam staff used prostitutes while working in Haiti following a devastating 2010 quake and a wave of subsequent allegations of sexual misconduct.
'They have been poorly served by Oxfam's leadership team too'.
Mark Goldring, the Chief Executive of Oxfam, has lambasted the intensity of the criticism levied against his organisation over claims that its workers used prostitutes in Haiti.
He told The Guardian: "The intensity and the ferocity of the attack makes you wonder, what did we do?" I struggle to understand it.
More than 1,000 direct debits to the charity were cancelled over the weekend and Mr Goldring said on Friday that the revelations could have a "substantial effect on public confidence, which would affect public donations".
"This was with an honourable, mature woman, who was not an natural disaster victim nor a prostitute".
Oxfam has nearly 10,000 staff working in more than 90 countries across the globe.
The deputy head of Oxfam resigned on Monday over what she said was the British charity's failure to adequately respond to past allegations of sexual misconduct by some of its staff in Haiti and Chad.
The government has made three demands of Oxfam: that it produce a plan on how to deal with any forthcoming allegations, that it report any staff members involved in the Haiti scandal and that it fully cooperate with the Haitian authorities.
They are also setting up a global database of accredited referees to ensure sex offenders can not re-offend at other charities, and improving the organisation's "whistleblowing mechanism".
And on immigration, Mormon voters much more dovish than the immigration hardliners now shaping the debate in Washington . Romney's announcement was expected this week, but was delayed by a day following a deadly school shooting in Florida.
Williams had been cautious since then and had made a decision to opt out of singles in the Fed Cup tie against the Netherlands. It's her first match so I'm glad she got to see it", Serena said in an on-court interview.
Instagram has started testing a new feature that alerts users when someone tries to snap a screenshot of the stories they share. By screenshotting the Story, you are going against the photographer's wishes - however little they actually care in practice.
But it was not to be and the defeat meant a club record of seven home Premier League games without victory was equaled. The Premier League match between Southampton and Liverpool will be broadcast live online and on NBC.
What he decides to do holds major consequences for Canada - the biggest supplier of both steel and aluminum south of the border. Stepped-up foreign production of steel and aluminum, especially by China, has driven down prices and hurt American producers.
By design, "the security of our products doesn't depend on the secrecy of our source code", Apple wrote in the statement. The anonymous sources say that they were part of a group of five individuals who were given the leaked iBoot code.
I don't watch it because I don't care, I do care about about what is happening in South Africa, because I am a citizen. South Africa's rand rallied soon after Ramaphosa started his speech, trading near its three-year best.
That the conference is being hosted in Kuwait is of particular significance given the history of animosity between the two states. It took over three years for Iraqi armed forces to fully liberate the country's territory from the clutches of Daesh terrorists.
Disney World announces opening date for Toy Story Land
Guests to Walt Disney World's Hollywood Studios will officially be able to visit's Andy's backyard playsets starting June 30. Toy Story Land is going to be attached to Disney's Hollywood Studios and covers 11 total acres of the park.
Despite "Pixel vs iPhone" Google phone sales are tiny
There is a partnership this year with Verizon and more visible marketing, but it seems this hasn't translated into massive sales. With Pixel phones not available in many global countries, it's not unlikely Google is working on a longer-term strategy.
Meghan Markle's dazzling outfit sells out in minutes
People are buzzing over every detail. "I was very conscious of the time", said Sergeant Dave Beveridge, of the Royal Artillery. The couple married at the same chapel as Harry and Meghan will, and similarly paraded through the streets afterwards.
Court orders restoration of DACA program
Created by the Obama administration through executive action in 2012, DACA now protects almost 700,000 Dreamers from deportation. The judge said the Trump administration can still rescind the program in the future if it does it the right way.
Met Office warns of ice and snow
A status yellow warning, issued by Met Éireann , says strong winds with gusts up to 110 kph are possible from 3pm this Saturday. Tuesday will be cold with good sunny spells and some scattered wintry showers in the west and north for a time.
NASA Probe Captures Farthest Images Taken Away From Earth
With diameters of a hundred kilometers or so, the two Kuiper belt objects are not large enough to classify as dwarf planets. Porter calculated when New Horizons could best observe the two Kuiper belt objects and helped schedule the images.