I'll double check the name of the tomatoes tomorrow when I can get to the GH. I'm convinced in my own mind (but don't take it that that's anything to go by - memory not what it used to be ) that it's Aikido, and, yes I also thought of unarmed combat of the oriental variety!! The plants are good and healthy, and perhaps I have to look over my shoulder from time to time to see that they aren't about to attack me.
I recall that they were listed predominantly as indoor variety, but I popped a couple of spare plants outdoors in a very sheltered, warm spot, and they've done OKish, but nothing like as heavy a crop as in the GH.
I don't know how to describe a taste, Philippa - they're not as sweet as Gardeners' Delight (which I eat like sweeties) but they do have a good old-fashioned tomato taste, unlike the poor specimens the general public has to put up with in the shops!