The trophy awarded to this year's Tour de France winner Geraint Thomas has been stolen during a cycle show in England.

The trophy, loaned to bike manufacturer Pinarello, had been on display at venues across the UK along with Team Sky's other grand tour trophies, but was stolen when it was left unattended at Birmingham's National Exhibition Centre.

"It is incredibly unfortunate that this has happened," Thomas said in a statement.

"It goes without saying that the trophy is of pretty limited value to whoever took it, but means a lot to me and to the team.

"Hopefully whoever took it will have the good grace to return it. A trophy is important, but clearly what matters most are the amazing memories from this incredible summer — and no one can ever take those away."

Pinarello managing director Richard Hemington said he was devastated by the theft.

"We accept full responsibility and have personally apologised to Geraint," Mr Hemington said.

"We hope that the trophy can be recovered."

Thomas won his first Tour de France in 2018. ( AP: Marco Bertorello )

Team Sky said police were investigating the matter and they were liaising with all relevant parties to agree on the best course of action to resolve the issue.

Thomas won the team's sixth Tour de France title in seven years in July.

It was the fourth successive grand tour win for the team after Chris Froome won the Tour and the Vuelta a Espana last year before clinching this year's Giro d'Italia.

It also made Thomas the first Welshman to win the Tour.

Reuters