Actress Minnie Driver has stood down from her role as a celebrity ambassador for Oxfam.
This follows claims that staff for the charity in Haiti and other countries paid vulnerable people for sex.
In a statement that she was “nothing short of horrified” by the allegations.
The British charity is accused of concealing the findings of an inquiry into claims staff used prostitutes while delivering aid in Haiti in 2011.
The English actress said that although she could not continue her 20 years of involvement with Oxfam, she would work against “social and economic injustice”.
The Charity Commission has launched a statutory inquiry into Oxfam – which denies a cover-up – but details of its scope have not yet been released.