The Resource
Central Defender
Which is why you have the type 45's, to detect and destroy ballistic missiles.All it takes is one cruise missile to get through the defences and a 3 billion pound warship is scuppered. All very well and good launching bombing raids against rag tag terrorists, but against a nation with advanced missile technology I have my doubts over these big lumbering warships.
Don't look at HMS QE in isolation, it will never be deployed alone.