Police numbers stepped up around Britain in wake of Manchester terror attacks

Extra police are to be deployed on the streets of London in the wake of the Manchester terror attack at an Ariana Grande concert at Manchester Arena which has killed 22 people.

Other police forces such as Devon and Cornwall have also announced increased patrols today in the wake of the attack.

Security has been tightened at music and sporting events in the wake of the attack – with Manchester United football stars facing additional security checks at their training complex in Carrington this morning.

London Mayor Sadiq Khan said that security would be reviewed in the capital after the attack, thought to be carried out by a ‘lone wolf’ suicide attacker.

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Mr Khan said, ‘London stands united with the great city of Manchester today after this barbaric and sickening attack.

‘My heart goes out to the victims, their families and everybody affected. Once again we have seen the heroism of our brave emergency services. They have our full support and are in all our thoughts today.

Terror analyst Michael S Smith said that celebrations on social media were a ‘strong indicator’ that the attack may be linked to supporters of Isis.

Isis has not yet officially claimed responsibility for the attack – with claims normally issued through their news agency, Amaq.