Riot-trained police will be sent to beaches in France as part of a new £662m deal with the UK to stop illegal migrants from crossing the English Channel.

Home Secretary Shabana Mahmood is expected to sign the three-year agreement with France on Thursday, which will see at least 50 police officers, each trained in "riot and crowd control tactics", drafted in to tackle violence and "hostile crowds".

The deal will also involve France deploying millions of pounds worth of drones, two new helicopters, and a new camera system to track down and intercept people smugglers and illegal migrants.

For the first time, ministers have said around £100m of UK funding could be redirected or withdrawn after a year, if French authorities do not stop enough people making the journey.

Speaking ahead of the new deal being signed, Mahmood said: "Our work with the French has stopped tens of thousands of illegal migrants boarding boats headed to Britain.