Mr Cheung, originally from Hong Kong, was last heard from on July 14

Romeo Cheung was last seen on July 14, and was supposed to be returning to the UK on July 17 - but never arrived

A hunt has been launched for a London investment banker who has been missing in Greenland for 12 days after telling his family he was going on a helicopter glacier tour.

Romeo Cheung was last seen on July 14, and was supposed to be returning to the UK on July 17 - but never arrived.

The Imperial College graduate, 27, was on a ten day solo adventure around the Arctic country, during which he planned to walk the 100 mile trail between Sisimiut to Kangerlussuaq.

A police search was launched a couple of days after he was last seen.

Mr Cheung, originally from Hong Kong, was without his luggage after it was lost by the airline, according to the South China Morning Post.

However, he is thought to have continued with the 'Arctic Route', which should take somewhere between nine and 11 days and is for the 'physically fit'.

The trader, who worked for Canada’s RBC Capital Market, had a tent and food with him, friends have said.

His family last heard from him shortly before he boarded a helicopter to visit the glaciers.

His friends turned to fellow travellers for clues about his whereabouts, posting on a Lonely Planet forum earlier this week.

‘Our friend Romeo Cheung went missing on a trekking trip from Sisimiut to Kangerlussuaq,’ the message said.

He was was on a solo adventure around the Arctic country, during which he planned to walk the 100 mile trail between Sisimiut (pictured) to Kangerlussuaq

The post - and a Facebook group - have since been removed.