Britain has begun repatriating the remains of victims of last week's terror attack at a beach resort in Tunisia.

Royal Air Force flights left Britain on Wednesday for the start of a process expected to last several days. The RAF will bring the bodies from Tunis-Carthage airport to Brize Norton, an air base in Oxfordshire, northwest of London.

All the repatriation measures have been completed and the bodies are ready to be returned to their respective countries," said Mokhtar Chaouachi, spokesman for the foreign affairs ministry.

Some 24 Britons are confirmed to have died in the attack in the north African resort of Sousse, but the number is expected to rise to 30.

Wounded Britons have already been brought back to the U.K., including four severely injured victims.