Question to the Ministry of Defence:

To ask the Secretary of State for Defence, what assessment he has made of the compatibility with the Government's policy on nuclear non-proliferation of the development of new types of nuclear weapon for use in UK defence.

Any decisions on UK nuclear deterrence policy or capability will be in line with the Nuclear Non-Proliferation Treaty (NPT), which remains the cornerstone of the global non-proliferation regime. Given the current threat to international security, and the reality that this will continue for the foreseeable future, our independent nuclear deterrent remains as vital today as ever.