A West Yorkshire MP has said the Prime Minister needs to "show some leadership and judgment" over the Andrew Mitchell incident.
Yvette Cooper, Labour's Shadow Home Secretary, said David Cameron should make Mr Mitchell stand down as Chief Whip "straight away".
It follows claims he called police officers "plebs" after they made him wheel his bike out of Downing Street's pedestrian exit instead of opening the main gate.
He has apologised to the officers but has denied using the word "plebs".
Defence Secretary Phillip Hammond said the row had been "hijacked".
A West Yorkshire MP has declared that Labour will carry on fighting against the closure of Remploy factories across our region.
They employ workers with disabilities, but the Government confirmed in July that six sites were to close.
It said the factories faced a shortfall of around £70 million last year and employees would be better served in mainstream employment.
But Yvette Cooper, who represents Normanton, Pontefract and Castleford, described the closures as "shocking" and claimed the Government had "turned their back".
Downing Street says no investigation will be carried out into the conduct of Chief Whip Andrew Mitchell.
It follows a letter requesting such an investigation from Yvette Cooper, the MP for Normanton, Pontefract and Castleford.
There were calls for Andrew Mitchell to resign after shouting at police officers when they refused to let him take his bicycle through the main gates at Downing Street. He has since apologised for his behaviour, but denies reports he called them "plebs".
The Secretary of the Cabinet, Sir Jeremy Heywood, has responded saying: