One in four children are due to start school in September without being toilet trained, a charity has said.

A report by early years charity Kindred found pupils are losing, on average, a third of their learning time each day due to teachers diverting away from teaching and towards supporting children who are not school-ready.

Bristol charity ERIC - the children’s bladder and bowel organisation - has now set up an “emergency intervention” campaign for those starting school next month.

ERIC CEO Juliette Rayner said that, while the problem had been a “growing issue” recently, “this year seems to be particularly bad”.