Latest: 21 arrested following year-long people smuggling probe

Latest: Police made 21 arrests in a major operation involving 350 officers to tackle a gang suspected of smuggling hundreds of migrants into the UK in the back of lorries.

Update 11am: Police made 21 arrests in a major operation involving 350 officers to tackle a gang suspected of smuggling hundreds of migrants into the UK in the back of lorries.

Raids took place on Teesside, in Hastings, Sussex, in London and the Northumbria Police force area following a year-long investigation which linked with police in France, Belgium and the Netherlands.