London (CNN Business) UK telecoms group BT has seen no evidence that technology from China's Huawei poses a security risk.

"Over the years that we've worked with Huawei, we've not yet seen anything that gives us cause for concern," Marc Allera, the CEO of BT's consumer brands, told CNN on Friday.

"We work closely with a large number of bodies — government and security," he added. "We continue to work with all of those relevant bodies to answer all the questions that are being asked right now."

Huawei's business has come under threat in recent months as an increasing number of governments express concern that its technology could be used by Chinese spies. Yet no supporting evidence has been made public.

Huawei has repeatedly denied that its products are a security risk. It maintains that it is a privately owned company with no ties to the Chinese government.

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