This is the dramatic moment the Huntingdon train stabbing suspect was tasered and arrested by armed police in the UK. Video shows the man being tasered as five armed officers tackle him to the ground - a police dog and it's handler can also be seen.

Extra police officers are being deployed across England's rail network in response to the stabbings on board a Doncaster-London train.

Chris Phillips, former head of the UK’s National Counter Terrorism Security Office, told The i Paper he is worried about “what happens after a couple of weeks” of a more visible police presence.