My Lords, my noble friend is right that the move to actual radicalisation can be very quick indeed. I pay tribute to the Counter Terrorism Internet Referral Unit, which since 2010 has helped to secure the removal of 270,000 pieces of material from the internet by social media providers—8,000 a month in 2016 alone. The CTIRU was the first of its kind globally and continues to be world-leading in its operation. My noble friend mentioned encryption, and we support the use of strong encryption. However, we must also ensure that, in tightly prescribed circumstances, our law enforcement and security and intelligence agencies are able to access the communications of criminals, including terrorists.