QRA in modern parlance
No a Type 45 couldn't do it, several (probably more than we own) might be able to do it, but no, the dark blue can't do QRA and provide AD (of the UK mainland) that an aircraft can. To think anything otherwise shows an unbelievable naivety.
Strategic isn't just about nuclear weapons, and Easy and LE have covered the implications well enough.
Maritime surveillance is not just the preserve of the RN I'm afraid (even now) and I dispute the "common sense" view as parochialism.
