Sixmp: I'm not sure you can actually find it in the UK. I know I have never seen it, but I have honestly not really looked for it either when I'm on that side of the pond.
I think that Gawith's American Vanilla actually comes somewhat close to it. But it's a bit darker and more Vanilla-ish if I recall correctly. I had a couple of bowls of it about a year or so ago.
On recognizing 1-Q, once you've smoked it, it actually becomes relatively easy to recognize. You walk into a store, see their "Golden HumptyDumpty" blend, look at it, sniff it and wonder... is this 1-Q . It's a ribbon cut Golden Virginia Cavendish with fair amount of black cavendish and a decent Vanilla topping. There's just something about it that makes it "just right". It's what a lot of people associated with the smells of someone smoking a pipe.
For a good picture you can have
a look here
Good luck