Mr Lowe criticised the decision, saying it enabled civil servants to "weaponise parliamentary privilege".

Mr Lowe had taken legal action against the Independent Complaints and Grievance Scheme (ICGS), which investigates complaints of inappropriate behaviour against MPs.

It followed the ICGS’s July decision to investigate a complaint made to it about him by a third party, who cannot be identified, in January 2025.

At a preliminary hearing in March, the ICGS argued the High Court did not have the power to hear the claim as it would interfere with parliamentary privilege.

But lawyers for Mr Lowe, whose Restore Britain Party celebrated election success last week when nine councillors under its Great Yarmouth First arm won seats on Norfolk County Council, argued his challenge should be allowed to proceed.

However, in a ruling on Friday (May 15), Mr Justice Chamberlain found the challenge was “barred by parliamentary privilege” and was “accordingly not justiciable”.

He continued........

© Eastern Daily Press