The hon. Member is absolutely right. The work done by those across our intelligence and security agencies often goes unseen and unremarked on, and, as a result, it is often unappreciated, but both sides of the House are clear about the debt of gratitude that we owe to many of those who work so hard to keep us safe.
In these debates, people often end up pitting liberty and security against each other or arguing, for example, that action to defend security constrains our liberty, that historic freedoms should be abandoned in the interests of security and that, somehow, they are in conflict. The truth is that, as we all know, both liberty and security are vital in a democracy, and they depend on each other. We need to feel secure to have the freedom to get on with our daily lives, and security measures also need to take account of the importance of the very freedoms that it is their purpose to defend. Our intelligence and security agencies also depend on public trust and, rightly, need always to be located within a strong legal framework with strong oversight. Where strong powers are needed to defend our national security, they need to be matched by strong oversight, with checks and balances to ensure that powers are proportionate and necessary, and never abused.