"Terrorist incidents both at home and abroad have shown very clearly the life and death decisions police officers have to make in split second circumstances. We must make sure that when police take the ultimate decision to protect the safety of the public they do so with the full support of the law and the state — there can be no room for hesitation when lives are at risk," a Labour party source told The Sunday Times.
The review will then be presented to Cameron in 2016 and could lead to legislation changes.
The November 13 terrorist attacks in Paris killed 130 people, and injured over 360. The Islamic State jihadist group, operating mainly in Syria and Iraq, and outlawed in many countries, including Russia, claimed responsibility for the attacks. Most of the perpetrators were Belgian and French citizens.