The UK government is conducting a new review into the impact of allowing Huawei telecoms equipment to be used in British 5G networks.
The National Cyber Security Centre (NCSC) involvement comes after the US brought fresh sanctions against the Chinese company, citing security fears.
In January, the UK resisted US pressure to ban Huawei from contributing to 5G.
A NCSC spokesman said: “The security and resilience of our networks is of paramount importance.”
“Following the US announcement of additional sanctions against Huawei, the NCSC is looking carefully at any impact they could have to the UK’s networks.”
The sanctions restrict Huawei from using US technology and software to design its semiconductors.
The US Department of Commerce is concerned Huawei has flouted regulations implemented last year that require the firm to obtain a licence in order to export US items.
It says Huawei got around this rule by using US semiconductor manufacturing equipment at factories in other countries.