Rick Prior, Acting Chair of the Metropolitan Police Federation, said: "The Metropolitan Police Federation and the colleagues we represent are hugely shocked, saddened and concerned over the decision to name the firearms officer involved in this incident.
“We still await the results of the Home Office's "accountability review" into operational policing but it goes without saying that our police officers must have full confidence that they have the protection needed to do this difficult and dangerous job society expects of them.
"Being a firearms officer in London is one of the world’s toughest jobs. Officers, who volunteer for the role, know the responsibility and accountability that comes with it. It is a job like no other and they need fairness when it comes to scrutiny.
“As a Federation, we can reassure our members that we continue to support the officer and his family at this difficult time; and will work to mitigate any risks this decision from the courts might bring.
"We also continue to provide support to those brave colleagues who willingly undertake this challenging firearms role every day to keep Londoners safe."