"Our review of the right policy approach to 5G security and resilience is still ongoing". The U.S. government thinks that 5G networks are more vulnerable to cyberattacks than previous generation networks, and is wary that Huawei, which has ties to the Chinese government, might conduct espionage on behalf of China.
The source said: 'Other nations can make the argument that if the British are confident of mitigation against national security threats then they can also reassure their publics and the U.S. administration that they are acting in a prudent manner'. Speaking in Munich at a security conference last week, Sir Alex Younger, the MI6 chief, also suggested that an outright ban might not be necessary, although he said the issue was "complicated".
China rejects the United States position, saying Washington has provided no evidence Huawei threatens national security.
Huawei has repeatedly denied the claims.
What are the security concerns over Huawei?
Mr Ekholm's comments come after European operators have warned that restrictions on Huawei, the world's largest supplier of network equipment, would delay their plans to build out the 5G networks that promise faster download speeds, lower signal delays and massively increased capacity from current 4G networks.
A report by the Financial Times cites "two people familiar with the conclusion" of analysis into the perceived threat of Huawei. Last month Meng, who is the daughter of the Huawei founder, was charged with wire fraud that violated US sanctions on Iran.
"China has not and will not require companies or individuals to collect or provide foreign countries' information for the Chinese government by installing backdoors or other actions that violate local laws", said Geng.
Robert Hannigan, former head of the Government Communication Headquarters (GCHQ), the United Kingdom signals intelligence agency, recently wrote in the FT that blanket bans on Chinese tech companies like Huawei make no sense.
While NCSC did not directly comment on the FT report, it reiterated earlier concerns about Huawei's engineering and security capabilities.
'We have set out the improvements we expect the company to make.