A review by police into concerns for the welfare of a child at the school at the centre of a row over its isolation techniques has found there is insufficient evidence to proceed with a criminal investigation.

The parents of a child who used to go to Brompton Westbrook Primary School had reported to police in November last year that they were concerned about what happened to him when he was there.

The school, in Kings Bastion, Gillingham, has been at the centre of a row over its isolation techniques.

It had faced criticism of its cupboard-sized isolation room after an investigation by Medway Council last year concluded there was a case of gross misconduct to be answered and four staff should be subject to a disciplinary hearing.

The room has now been removed as part of ongoing building work at the site.

Medway Council believed it to be necessary to take the door off the room in September last year after it investigated complaints from parents who claimed their children had been traumatised by being kept in the room for long periods.

But the authority could not take any action when the primary school became an academy in October and a new inquiry was launched by the trustees.

This has finished and while they insist they have full confidence in staff and that no further action will be taken, they have refused to publish their findings.

However, a meeting was held in London in December to try and thrash out a solution to the ongoing situation after Medway Council wrote to the DfE to ask what further action it would take in the matter.

This prompted the DfE to ask for more details from its “independent investigation”.

"There is insufficient evidence to proceed with a criminal investigation" - Kent Police

A DfE spokesperson at the time, said: “We continue to review the investigation into Brompton-Westbrook commissioned by the academy trust and we remain in discussions with the trust to ensure it takes appropriate action.

“We are considering what steps to take next if they fail to do so.”

Kent Police started reviewing information received in November and this week revealed it will not be proceeding with an investigation.

A spokesman added: “Kent Police has thoroughly reviewed information received on November 27 regarding concerns for the welfare of a child at a school in Gillingham and determined, following interviews with a number of concerned parties and early consultation with the Crown Prosecution Service, that there is insufficient evidence to proceed with a criminal investigation.

A Medway Council spokesman added: “Kent Police has informed us of a decision not to proceed with a criminal investigation following information it received about concerns at a school.”

Stories you might have missed

Motorcyclist 'could not have avoided pensioner'

Speeding drivers clock up 146mph in Kent

Police chief defends £14k PR bill

Ex-Gills player: 'The night I was accused of rape'