To be honest, I bet most countries have plans to strike others with the use of nuclear weapons. In fact, I'm almost certain of it. What's the point of having nukes if you don't even think about using them. I mean, if nuclear war
did break out, and you hadn't planned how you would use your supply, you'd be a bit buggered...
That said, we're lucky enough then none of these plans have (since WWII) be put into action. Just because Israel has plans, doesn't mean they will use them. Hopefully they will discuss the plans, and see that using tactical nuclear weapons would pretty much turn the world against them.
In conclusion, don't be surprised, I'm sure the UK has hundreds of plans involving nukes. And don't get (too) worried, as I'm sure they won't be used...
Edit - oh, and training their bombers to use "Bunker Busters", well, the US and UK use them all the time, especially after 9/11, so don't be worried about them either. Or if you do, complain that we used them first.
Oh, and Nanor, I'll have to kill you now you let the secret government plan involving me and Defcon out of the bag! It was nice knowing you!