This issue was considered in detail by an expert group comprising representatives of law enforcement, the security and intelligence agencies and communications service providers following the terrorist attack on London in July 2005. The experts' findings remain valid. They concluded that the compulsory registration of ownership of mobile telephones would not deliver any significant new benefits to the investigatory process and would dilute the effectiveness of current self-registration schemes." (emphasis added)
要quote哩段,睇住先,未做DD
Source:
https://www.statewatch.org/news/2020/january/uk-history-repeats-itself-with-calls-to-introduce-mandatory-sim-registration/