LONDON (Reuters) - Prime Minister Theresa May responded on Sunday to an attack in London which killed seven people, declaring "enough is enough" and calling for a review of Britain's counter-terrorism strategy.

Below is the full text of the statement:

Last night, our country fell victim to a brutal terrorist attack once again. As a result I have just chaired a meeting of the government’s emergency committee and I want to update you with the latest information about the attack.

Shortly before 10:10 yesterday evening, the Metropolitan Police received reports that a white van had struck pedestrians on London Bridge. It continued to drive from London Bridge to Borough Market, where 3 terrorists left the van and attacked innocent and unarmed civilians with blades and knives.

All three were wearing what appeared to be explosive vests, but the police have established that this clothing was fake and worn only to spread panic and fear.

As so often in such serious situations, the police responded with great courage and great speed. Armed officers from the Metropolitan Police and the City of London Police arrived at Borough Market within moments, and shot and killed the 3 suspects. The terrorists were confronted and shot by armed officers within 8 minutes of the police receiving the first emergency call.

Seven people have died as a result of the attack, in addition to the 3 suspects shot dead by the police. Forty-eight people are being treated in several hospitals across London. Many have life-threatening conditions.

On behalf of the people of London, and on behalf of the whole country, I want to thank and pay tribute to the professionalism and bravery of the police and the emergency services – and the courage of members of the public who defended themselves and others from the attackers. And our thoughts and prayers are with the victims and with their friends, families and loved ones.

This is, as we all know, the third terrorist attack Britain has experienced in the last 3 months. In March, a similar attack took place, just around the corner on Westminster Bridge. Two weeks ago, the Manchester Arena was attacked by a suicide bomber. And now London has been struck once more.

And at the same time, the security and intelligence agencies and police have disrupted 5 credible plots since the Westminster attack in March.

In terms of their planning and execution, the recent attacks are not connected. But we believe we are experiencing a new trend in the threat we face, as terrorism breeds terrorism, and perpetrators are inspired to attack not only on the basis of carefully-constructed plots after years of planning and training – and not even as lone attackers radicalised online – but by copying one another and often using the crudest of means of attack.

We cannot and must not pretend that things can continue as they are. Things need to change, and they need to change in 4 important ways.

First, while the recent attacks are not connected by common networks, they are connected in one important sense. They are bound together by the single, evil ideology of Islamist extremism that preaches hatred, sows division, and promotes sectarianism. It is an ideology that claims our Western values of freedom, democracy and human rights are incompatible with the religion of Islam. It is an ideology that is a perversion of Islam and a perversion of the truth.

Defeating this ideology is one of the great challenges of our time. But it cannot be defeated through military intervention alone. It will not be defeated through the maintenance of a permanent, defensive counter-terrorism operation, however skilful its leaders and practitioners. It will only be defeated when we turn people’s minds away from this violence – and make them understand that our values – pluralistic, British values – are superior to anything offered by the preachers and supporters of hate.

Second, we cannot allow this ideology the safe space it needs to breed. Yet that is precisely what the internet – and the big companies that provide internet-based services – provide. We need to work with allied, democratic governments to reach international agreements that regulate cyberspace to prevent the spread of extremism and terrorist planning. And we need to do everything we can at home to reduce the risks of extremism online.