The Independent Police Complaints Commission is to indepentently investigate the conduct of three Police Federation representatives, following their meeting with Andrew Mitchell - the MP at the centre of the so-called 'Plebgate' row.
They met with the MP at his Sutton Coldfield constituency office in October 2012, weeks after the MP allegedly called police officers at Downing Street 'plebs'.
West Mercia Police previously investigated the conduct of those three representatives from West Mercia, Warwickshire and West Midlands Police Federations, under the supervision of the IPCC.
That investigation found that there was no case to answer for any of the officers involved.
The IPCC has now confirmed it will re-investigate the case.