The UK Metropolitan Police Service is reportedly expected to name the attackers behind the terror attack in London that killed seven people and injured 48 on Saturday night.

The police claim to know the identity of the three attackers and would reveal their names when it would be ‘operationally possible’, reported BBC.

As stated by UK counterterrorism police officer Mark Rowley, the attack started at 9:58pm local time when three men drove a white van at a very high-speed, from north to south, hitting pedestrians walking on the London Bridge.

The attackers abandoned the van and went on to stab the people revelling in the nearby Borough Market area.

Rowley was quoted by Thomson Reuters as saying: “Armed response officers then responded very quickly and bravely and confronted the three male suspects who were shot and killed on Borough Market.

"The suspects were wearing what looked like explosive vests but these were later established to be hoaxes."

“The suspects were wearing what looked like explosive vests but these were later established to be hoaxes.”

About 12 people have been arrested in the Barking area of London, including seven women, in relation to an investigation.

Metropolitan Police Commissioner Cressida Dick said that a large amount of forensic material and evidence have been seized from the van and also from the police raids.

Vowing a tougher response to the incident, UK Prime Minister Theresa May said in a statement: “We cannot and must not pretend that things can continue as they are.”

May added: “As a country, our response must be as it has always been when we have been confronted by violence. We must come together, we must pull together, and united we will take on and defeat our enemies.”

The terrorist group ISIS has claimed responsibility for the attack, which is the third such terror attack that Britain has witnessed in the last three months.

A similar attack took place on Westminster Bridge in March and the Manchester Arena attack happened just two weeks ago.