Dartington Studio was really a very short lived enterprise. It was a very brave idea to take inspiration from much older glass, and to use the same materials and methods as they did.
This design came out at the very beginning, along with Alchemy, and I think both were inspired by Monart, although I never found out the name of this particular pattern with the crizzling all marvered in.
After these two designs, they went on to emulating Venetian glass with gold foil, then finally, they made cranberry glass, using gold to create the colour. It finally broke them, proving too expensive to make.
I was following it from fairly close to the start, and the Stuart Visitor Centre in Crieff used to stock it. I had arranged with the staff there to tell me when new ranges were coming out as I was very impressed with it. And that is how I know of the demise, and why, of Dartington Studio.
I'm sorry, I can't help with a name. :'(
There is nothing in Lesley Jackson. It was published before the Studio Range was started.