Terrorists could face tougher prison sentences as part of new crackdown in the Queen's Speech

• A new extremism crackdown was included in the Queen's Speech today 
• It will include a review of prison sentences for terrorism-related offences 
• A Commission for Countering Extremism comes after a wave of terror attacks 
• May vowed 'enough is enough' and 'things need to change' after London Bridge 

Terrorists could face tougher prison sentences under a new extremism crackdown, the Queen's Speech revealed today.

Building on Theresa May's vow to overhaul anti-terror laws in the wake of the London Bridge attack, today's Government programme announces a new Commission for Countering Extremism.

No 10 today said the review would consider all aspect of counter terrorism policy, including the controversial Prevent programme. 

The Prime Minister has warned Britain has been too tolerant of intolerance and promised things would change as the nation undergoes a wave of attacks. 

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Armed officers patrolled outside Parliament today (pictured) ahead of a Queen's Speech that included new counter terrorism plans 

In the speech, the Queen said: 'In the light of the terrorist attacks in Manchester and London, my Government's counter terrorism strategy will be reviewed to ensure the police and security services have all the powers they need, and that the length of custodial sentences for terrorism-related offences are sufficient to keep the population safe.' 

In the wake of attacks at Westminster, Manchester and London Bridge, Mrs May warned of an 'unprecedented' threat from terrorism.  

She said 'enough is enough' and laid out a four point plan for how she would tackle problem. 

She announced a review of counter-terrorism strategy to make sure police and security services have 'all the powers they need to protect our country'.

The new Commission for Countering Extremism will be given the task of supporting the Government in 'stamping out extremist ideology in all its forms'.

It will review counter-terrorism powers, prison sentences for convicted terrorists and work with internet firms to halt the spread of extremist material.

Official figures show sentences handed to those convicted of terror-related charges have been increasing.

In the year to the end of March, the most common term was between four and 10 years, accounting for 41 per cent of the cases.

This denoted a shift compared to the previous two years, when the most frequent sentence length was between one and four years.

The counter-terror review is included among the 'non-legislative' measures outlined in the Queen's Speech - but the Government insisted it 'will not hesitate' to introduce new legislation if necessary.

Officials will also look at what further steps need to be taken to halt the spread of extremist material and 'poisonous' propaganda online.

In her speech in the aftermath of London Bridge, Mrs May said: 'In light of what we are learning about the changing threat, we need to review Britain's counter-terrorism strategy to make sure the police and security services have all the powers they need.

'And if we need to increase the length of custodial sentences for terrorist-related offences - even apparently less serious offences - that is what we will do.

'Since the emergence of the threat from Islamist-inspired terrorism, our country has made significant progress in disrupting plots and protecting the public.

'But it is time to say `Enough is enough'.

'Everybody needs to go about their lives as they normally would. Our society should continue to function in accordance with our values.

'But when it comes to taking on extremism and terrorism, things need to change.'