Deputy Chief Constable Simon Chesterman, who is in charge of armed policing, says armed units have been given new orders to shoot through the windscreens of vehicles driven by terrorists.
Previously police officers were banned from using firearms to incapacitate drivers of motor vehicles, because of the risk of the vehicle spiraling out of control and bullets ricocheting into innocent bystanders.
“We used to talk about not shooting at a moving vehicle because of the danger we might cause if we fired at a driver,” Chesterman said.
“What tends to happen is that when a bullet hits glass, it will deflect it, so shooting through glass is difficult.
“But if the vehicle’s being used as a weapon in the first place, there aren’t many tactics available in relation to stopping it, particularly a very large lorry.
“Driving a vehicle in front of it is not going to stop it, so you need to shoot the driver,” he added.
For this purpose, the British police will adopt “more aggressive tactics.”
“We have the ability to move much quicker to resolve situations. Previously the approach was to locate, contain and neutralize. Now it is to locate and confront,” Chesterman said.
Armed police officers will also be provided with higher calibre bullets to successfully shoot through vehicle windscreens and doors.