Huawei, the world's largest producer of telecommunications equipment, has been defensive for the past few months as the US government has pushed for its technology to be banned and claims it can be used by China to spy. Australia and New Zealand have already blocked mobile operators from using Huawei to 5G networks, and other governments, including the UK, are considering the situation.
The National Cyber Security Center refused to comment on the details of the Financial Times report on Monday, but said in a statement that it has "a unique overview and understanding of Huawei engineering and network security."
The information agency plays an important role in a broader British government review examining the security of technology that operators plan to use in 5G networks in the country.
"The review looks at a number of choices and ends in the spring. No decisions have been made, and some suggestions for the opposite are inaccurate" The Department of Culture, Media and Sport said in a statement Monday.
Monday, a spokesman for Huawei said the company is advocating an open dialogue on security.
"Cyber security is a problem that needs to be solved across the industry," the spokesman said in a statement. "We remain focused on working with our customers to help them deliver world-leading technology."
A potential rift for the five eyes?
If the British government decides that Huawei equipment can be used for 5G, it is likely to push relations with Washington.
Vice President Mike Pence said Saturday that the United States has been "very clear "with their security partners about the threat from Huawei and other Chinese telecommunications companies.
"We need to protect our critical telecommunications infrastructure, and America asks all our security partners to be vigilant and reject any business that will compromise the integrity of our communications technology or our national security systems," Pence told participants at the Munich Security Conference.
Last year, a British government control panel that monitors Huawei's activities in the UK warned that it could only provide "limited assurance" that its telecom equipment was not a threat to national security.
The supervisory panel also said that "technical issues" were identified in Huawei's process processes, leading to "new dangers in the UK telecommunications network."
United Kingdom could influence others
"Over the years we've been working with Huawei, we haven't yet seen anything to worry about," said Marc Allera, CEO of BT's consumer brands.
Samuel Burke contributed with reporting.