Richard Bennett, Uniformed Policing Lead for the College of Policing, said: “We agree there should be no conferring before a statement is made but separation should be decided by a senior officer who is in command of an incident and will know if it is safe, necessary and practical to do so.
"In a terrorist attack where the situation is evolving, we expect officers to protect the public rather than being separated from colleagues. "Separation should be reserved for situations where it is necessary, for example if a criminal or disciplinary offence is suspected during an operation. It is unlikely to be necessary where other clear and accountable measures could be used such as the supervision of witnesses, the use of body worn video or the presence of the Independent Police Complaints Commission (IPCC). "Any decision to separate should be practical, for example if an incident happens in a remote location we need to consider the number of witnesses involved and the resources available to achieve separation.
"The College shares the IPCCs aim of supporting forces in taking all reasonable steps to reduce the risk that an investigation is undermined. We are in the process of producing guidance on all incidents relating to death and serious injury following police involvement and will review it in light of what is approved by the Home Secretary."