Adam Gemili admitted he was 'heartbroken' after seeing a dream World Championship medal snatched away amid more relay controversy in Moscow on Sunday.

The 19-year-old Dartford star - who finished fifth in the 200m final on Saturday night - was part of the GB 4x100m relay team which stormed round to finish in bronze medal position, only to find themselves disqualified shortly before the medal ceremony.

The fourth-placed Canadians lodged an appeal following an illegal handover between Harry Aikines-Aryeetey and James Ellington and despite enjoying a lap of honour, the British team were told their fate by an official moments before heading to the podium.

After the news Gemili told fans on twitter: "Thank you all for the messages of encouragement. To be so close to receiving a medal and have it taken away is heartbreaking.

"As a team we will pick ourselves up and carry on until we get it right. Onwards and upwards.”

The former Dartford Grammar School pupil however said that Saturday had been an 'awesome, awesome day' after his maiden senior final.

Usain Bolt stormed to gold in the 200m in a time of 19.66secs with Jamaican compatriot Warren Weir taking silver in 19.79secs.

Gemili was edged out of bronze by just 0.04secs, with American Curtis Mitchell claiming the final medal just ahead of Jamaican Nickel Ashmeade in a blanket finish.

Gemili added: "I'm so happy with fifth place in my first senior final."

The Blackheath & Bromley star said he was 'over the moon' after he became the second-fastest Brit of all time and dipping under the magical 20-second barrier to win his semi-final on Friday evening.

His time of 19.98 was the fastest since John Regis 19 years ago and saw him pip Ashmeade on the line to qualify second-fastest for the final.

Gemili's time of 20.17 in the heats on Friday morning was 0.13 quicker than his previous best, set at Bedford earlier this summer.

Gemili's Blackheath & Bromley teammate Dina Asher-Smith, from Orpington, was part of the GB 4x100m women's relay team which were upgraded to a bronze on Sunday afternoon.

The 17-year-old European Junior Champion over 200m - appearing in her first senior championships - ran the first leg as GB finished in fourth place, but was later told that the French team had been DQed for a faulty handover.