British Airways chief Willie Walsh today called on the UK government to change its immigration rules to ensure Asian tourists are not put off from coming to the country.
He warned that "so many people want to come to London, but don't because they struggle with the visa regime".
Walsh, who runs IAG, the airline group which owns BA, added, "It's so much easier for them to go elsewhere. London is losing out because of the visa regime."
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BA launched a new route to Chengdu, a strong business region in south central China last year, but fears China is among the Asian countries who face a tough time over visas.
"It's Chinese tourists particularly who find it difficult to come to the UK," he told the Evening Standard.
"They are still coming, and that shows how strong the number of visitors could be, as the Chinese going through the difficulties of travelling here. But if it was easier we'd see a massive increase in tourists from China - and that would benefit the economy," Walsh said.
BA's capacity meanwhile increased by 2 per cent after the introduction of the Airbus A380 and Boeing 787 into the airline's fleet.
"The new aircrafts' economic and environmental performance has been excellent and customers love them," Walsh said.