More than 1,200 police and officials in France have begun an operation to clear the “Jungle” migrant camp in Calais.
The camp has been housing some 7,000 people in squalid conditions.
Migrants queued peacefully to be processed, and the first of some 60 coaches that will carry them to refugee centres across France, has now left.
There is concern that some migrants will refuse to go because they still want to get to Britain, and there were some clashes over the weekend.
The demolition of the camp is expected to take place on Tuesday.
The UK has begun to accept some of the estimated 1,300 unaccompanied children from the camp.
The first group without family ties to the UK has arrived in Britain under the “Dubs amendment” rules, which grant refuge to the most vulnerable.