Oxfam's international director has apologised over the Haiti sex scandal and urged victims of abuse by aid workers to come forward.

Winnie Byanyima asked for forgiveness for the charity "from the bottom" of her heart.

On Friday, Ms Byanyima said that Oxfam would be introducing a raft of new measures to help route out sexual misconduct within the organisation.

It comes as further allegations emerge against the scandal-hit charity.

Ms Byanyima's apology also follows warnings from International Development Secretary Penny Mordaunt over Oxfam's funding.

A former Ugandan MP, Ms Byanyima spoke in her own language to convey how sorry the charity was over the affair.

Oxfam has been blighted with allegations that its aid workers used Haitian prostitutes following the country's 2010 earthquake and that the organisation tried covering it up.

"I have two priorities now," she said.

"One is to make sure that the work we do as Oxfam - of saving lives and reaching vulnerable people - continues, because it is vital.

"My second is to route out sexual misconduct from our organisation."

In a bid to make Oxfam more transparent, Ms Byanyima said the organisation would be introducing a raft of "wide-ranging" plans.

These include the appointment of a high-level commissioner to look into Oxfam's "culture and practices".

This figure would be mandated to examine past cases of misconduct and Oxfam's response.

Ms Byanyima said measures would also be taken to ensure offenders would not be able to falsify references from the charity.

Plans are also in place to double resourcing for safeguarding and make Oxfam's whistleblowing process "safe and confidential".

"I'm really inviting anyone who has been a victim of abuse by anyone in our organisation to come forward," Ms Byanyima.

"I'm here for all the women who have been abused. I want them to come forward and for justice to be done for them."