As I said Timex, what possible use is there for a naval fleet other than a carrier force?
Airborne - for Tomahawks and Nimrods, I was of course being sarcastic and if you'd care to do some reading-up *ahem* you'd know that the concept of hanging stand-off missiles (nuclear or otherwise) under the MRA4 has already been looked at quite seriously, hence my tongue-in-cheek comment.
I wouldn't disagree about the submarine's capability to remain unseen, but then we're no longer in a Cold War, and perhaps a more visible nuclear capability might be more appropriate? It all rather depends on who you're proposing to wave your nuclear stick at, I guess, but now that the RAF's ability to store and handle nuclear weapons is gone, there's not much chance of it ever coming back, plus you can guarantee that the Navy will be hanging-on to Trident for as long as possible. Bless 'em, it's their only raison d'etre theses days!