A Labour MP has accused Theresa May of ignoring her three previous warnings about claims of a Westminster sex scandal cover-up.
Lisa Nandy claimed she told the then-Home Secretary years ago about allegations Tory whips had "used information about sexual abuse to demand loyalty from MPs".
Speaking at Prime Minister's Questions, Ms Nandy said: "I bought that information to her in this House and I warned her at the time that unless real action was taken we risked repeating those injustices again today.
"On three occasions I asked her to act and on three occasions she did not.
"So can I ask her – in this of all weeks, for the fourth time, will she finally take concrete action to tackle this?"
Ms Nandy also tweeted a question she asked Mrs May in July 2014, highlighting the claim by an ex-Tory whip made in a 1970s documentary that his office routinely helped MPs with scandals, including those "involving small boys".
Mrs May responded on Wednesday by promising to "look back" at the interventions.
She said: "I will say to her that I am very clear that the whips office – I hope this goes for all whips offices across this House – should make clear to people that where there are any sexual abuse allegations that could be of a criminal nature that people should go to the police.
"It is not appropriate for those to be dealt with by whips offices – those should go to the police.
"That continues to be the case."