Terrorism Prevention and Investigation Measures Bill

I commend the hon. Gentleman for his earlier comments on surveillance, the need to ensure that people are properly trained and the need not to pretend that we could introduce the level of skill that is required in a very short time. It takes time to train an individual. There is no perfect solution, because someone who is under surveillance can, if they are very skilled, slip that surveillance until such time as the people carrying out the surveillance catch up with them.