A sexual violence specialist has been brought into parliament to advise parties on the creation of a new independent grievance procedure in the wake of a series of sexual harassment allegations against MPs.

Dr Helen Mott is offering a cross party group of MPs specific guidance relating to rape and harassment.

The Telegraph understands the group are working towards the creation of new Independent Complaints and Grievance Policy, which will be announced before Parliament breaks up for the Christmas recess.

The group, which is chaired by the Leader of the House, Andrea Leadsom, has been hearing from a range of individuals with experience in HR, counselling, parliamentary procedure and House protocols.

It comes after a series of allegations were made against MPs by their staff and party activists.

An investigation by The Telegraph found that a number of young people working in politics claim to have been sexually harassed and intimidated.