Since October 2015, large retailers in England have been legally required to impose the charge.
New Zealand uses "hundreds of millions" of single-use plastic bags each year, many of which end up harming marine life, Prime Minister Jacinda Ardern said.
Some 8 million tonnes of plastic garbage - bottles, packaging and other waste - is dumped in the sea every year, killing marine life.
Many blamed the haphazard use of plastic, which was also cited in flash flooding in the capital after storm water drains became clogged.
West Ham United have appointed Croatian Slaven Bilic as their manager, the Premier League club said yesterday.