Japan Airlines is introducing a new breathalyser system at airports abroad after one of its pilots was arrested at Heathrow for being drunk.

It comes after a Japanese newspaper reported that the airlines pilots had failed alcohol tests on 19 occasions since August 2017.

Katsutoshi Jitsukawa was arrested last month after failing an alcohol test shortly before a flight to Tokyo.

He had almost 10 times the legal permitted amount of alcohol in his bloodstream when he was arrested, according to the Metropolitan Police.

Reports in Japan said Mr Jitsukawa managed to cheat on an airline breath test before his arrest.

Japanese law does not set limits for alcohol consumption for pilots. Airlines are instead left to determine their own policies.