Health officials in France said workers at Airbus Atlantic's site in the west of the country suffered from vomiting and diarrhoea.

The ARS health agency has not revealed what was on the menu at the event, which was held last week.

An investigation was being launched to find the source of the mass food poisoning, the organisation told the AFP news agency.

Airbus Atlantic, a subsidiary of aerospace group Airbus, employs 15,000 people in five countries.

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The wider Airbus organisation employs 134,000 people and is one of the largest aircraft makers in the world.

It designs, manufactures and delivers aerospace products, and has operations for commercial aircraft, helicopters, defence, space and security.

Sky News has contacted Airbus for comment.