The Northern Ireland Executive will bring forward legislation later this year to introduce a 5p charge for single-use carrier bags in April 2013.

BBC: Plastic bags: Welsh government urges charges for rest of UK

Back then Thai Airways, the country's flagship carrier, was in charge of the duty-free operations at Bangkok's old Don Muang International.

FORBES: The Kingdom and the Power

Retailers must now charge shoppers at least five pence for each new single-use carrier bag.

BBC: Northern Ireland's new five-pence carrier bag tax