My hon. Friend is right. We do need to do more to ensure that we have more tools to prosecute people who have helped or supported terrorist organisations, whether they have actually gone to Syria—some examples have been mentioned today—or whether they are in our own country, helping those organisations in other ways. Since I became Home Secretary, I have been determined to provide more of those tools. I was pleased that my hon. Friend, and indeed the whole House, supported the Bill that became the Counter-Terrorism and Border Security Act 2019, which will give us far more tools that can be used for law enforcement. We have increased sentences in many instances. The Act will also enable us to step up the work that we have been doing with our allies across the world to gather more battlefield evidence, because evidence is also crucial, especially if we are seeking higher sentences.
My hon. Friend is right to issue that challenge and to say we need to do more, and I agree with him.