For years, the UK government has been concerned that Huawei's networking equipment is aiding the Chinese government and threatening national security. In Britain, the company supplies major network providers such as BT, O2 and EE, which only amplifies the anxiety of politicians and security advocates. In 2012, Huawei opened a "Cyber Security Evaluation Centre" to alleviate some of their fears. It's designed to test all incoming updates to Huawei hardware and software used on UK networks. The problem is that all of the staff are employed by Huawei; in 2013, the UK's Intelligence and Security Committee said it was concerned about the arrangement, which effectively relies on self-policing. The government agreed, and said it would investigate the processes inside the centre.