Yet another chair / designer ID.......  

Casteless
I think it's beautiful -- shape, colour of both wood and vinyl (?).
One thing I've found interesting in all sorts of fields is people's desire for affirmation of their taste, via knowing that something they own is a designer piece. Not all designer pieces are beautiful and many of unknown provenance are outstanding.
If one is acquiring to resell I guess that distinction is important as it will help to sell more quickly for more money. If it has beautiful lines but is of unknown parenthood, someone out there will recognize it's beauty but you probably won't get top dollar for it. But if it's for personal use and you love it, I wouldn't hesitate to pick up the other pieces of the set.
Also, sometimes you see something wonderful, recognize that it's great design, but only later come to know its origins. So it's still worth picking up if price is right.
My 2 cents, anyway.

Thanks
Great comments thanks! I do love it as a design as well and think I will hold onto them..... For a while at least.
I always like to know the backstory of pieces whether I keep them or pass them on.
A bit more digging and research on my part required I think!
Thanks once again

Looks like..
they could be made by Benchair, a British manufacturer

Opps..
meant to say Benchairs or sometimes found as Ben Chairs

That's the name
I was searching for! Yes.

Great stuff!
Thanks for the help guys! The hunt begins for another two!
Cheers