Delta spokeswoman Kristin Baur told the Associated Press news agency that flights attendants stopped serving the sandwiches as soon as the first needle was discovered, and alerted other flights.

BBC: Needles found in Delta Air Lines on-board sandwiches

It stopped international flights in the second quarter.

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Asiana, a local airline, has stopped serving snacks on domestic flights.

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Overnight flights which disturb Londoners' sleep should be stopped or reduced, the London Assembly has said.

BBC: Aeroplane

Most airlines stopped serving free meals in coach on domestic flights after the 2001 terrorist attacks crippled the industry.

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Lufthansa, Germany's national carrier, has sharply cut its flights from Berlin, and the big American airlines have stopped flying there altogether.

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