A Conservative MP has quit her Government role to concentrate on fighting the pro-Remain "imbalance" on a key Commons Brexit committee.

Andrea Jenkyns, one of the 21 members of the Exiting the European Union Committee, said she had become "frustrated" at its attempts to "upset the democratic decision of the British people".

Brexiteers on the committee are outnumbered two to one by Remainers, and in a scathing attack on her colleagues Ms Jenkyns said reports produced by the committee "have been unbalanced in favour of us either remaining in the EU, the customs union or delaying our departure".

She announced she was giving up her unpaid role as a Parliamentary Private Secretary to the Ministry of Housing, Communities and Local Government on the day the committee produced a report suggesting Britain would have to stay in the customs union.

The committee plays a key role in scrutinising the Government's work on Brexit and frequently calls witnesses including David Davis, the Brexit Secretary, to give evidence.