The National Cyber Security Centre (NCSC) engages with every operator who uses the Huawei Cyber Security Evaluation Centre (HCSEC) to manage cyber security risks within
their networks. The number of operators that use HCSEC is recorded centrally but for commercial reasons we will not release the number or the names of operators. All of the
significant commercial networks in the UK who use Huawei have access to and work with the HCSEC. It is the responsibility of operators to ensure the security and resilience of
their networks. Other operators may use the guidance that is publicly available on the NCSC website, which we cannot track, or advice from other relevant bodies such as Ofcom, the regulator.