The BBC conducted a survey of people working for politicians at the Welsh Assembly about sexual harassment and bullying and found its own staff had been accused of inappropriate behaviour.

The corporation said the questionnaire, commissioned by current affairs show BBC Wales Live, was sent to 247 people who work at the Welsh Assembly.

It found that staff working for AMs made two claims of sexual assault against BBC staff and one against a politician.

One said they had been “inappropriately touched” by a person working for the BBC and another said they had been sexually assaulted by a member of BBC staff.

A third person claimed they had been sexually assaulted by an AM.

A further respondent said they had been “accosted aggressively by a BBC journalist”.

The survey asked about sexual harassment and bullying in the Senedd in Cardiff Bay and constituency offices and received 30 anonymous responses.

On Tuesday the Assembly Commission revealed the findings of its own survey of people working at Cardiff Bay, which found 37 people had experienced incidents of inappropriate behaviour.

A BBC Wales spokeswoman said: “The BBC Wales Live programme has been looking at the working environment at the National Assembly for Wales for a number of weeks.

“As part of the team’s research, it sent a questionnaire regarding experiences of inappropriate behaviour to a large number of staff working for Assembly Members.

“This questionnaire – similar to one already conducted by the BBC at Westminster – made it clear that any responses would be treated in the strictest confidence.

“The BBC questionnaire was conducted independently of the survey looking into similar issues published by the National Assembly for Wales on Tuesday.

“As a result of the BBC Wales Live questionnaire we have been made aware of three anonymous allegations against unnamed BBC staff.

“The BBC takes matters of this nature very seriously and will look carefully at the information that has been broadcast – but it is extremely difficult to verify these allegations as they stand given the limited information that we have received.

“If anyone has any information they think could assist us in these matters, they can access our details on the BBC Whistleblowing website – which provides options to contact the BBC directly or via an independent organisation, Expolink.

“We are also reminding staff of the BBC’s policies should they wish to raise any concerns confidentially.”