A young British woman facing years locked in a grim Sri Lankan jail after being caught with £1.2 million worth of cannabis has told of her despair – and insisted she has been set up.

Charlotte May Lee, 21, from Coulsdon, south London, was arrested in the capital Colombo last week after police discovered 46 kg of 'Kush' - a synthetic strain of cannabis - in her suitcase.

Miss Lee, a former cabin crew worker, had just arrived in Sri Lanka on a flight from Bangkok when she was arrested at Bandaranaike Airport and taken to custody last Monday.

She is now being held in Negombo Prison, north of the capital, while she waits to hear her fate.

Speaking to MailOnline from behind bars in the woman's ward of the notorious prison, Miss Lee said she had 'no idea' that there were drugs in her luggage when she set off for Sri Lanka.