Spindle Back Armchairs  

I've definitely seen these over here, so can say they are likely on the bigger British mid century manufacturers.

Part of me wants to say McIntosh, but until I see something certain I won't commit to it.

@kyle-barrett  Thanks for the reply.  I've searched using every British maker I know of , including McIntosh, and every British listing site, but nothing so far.  I know Ercol made a lot of Windsor chairs and I've looked at their old catalogs but nothing matches.  Here's a better photo of one of my chairs showing the arm details.  Definitely feels like middle-tier, in terms of quality, but a nice design nonetheless.   

Windsor Chair is a type of chair that is a form of wooden seating in which the back and sides consist of multiple thin, turned spindles that are attached to a solid, sculpted seat. It has straight legs that splay outward, and its back reclines slightly. If you are residing in Australia and want to buy a home, office furniture with a modern look you have to visit Value Office Furniture's online store.

I thought user 171 was going to say something useful, but instead it seems his post was intended as an ad? What he could have said but didn’t, is that your chairs are by definition not Windsor chairs, because they lack a solid plank seat. The Windsor was reinterpreted in the mid 20th century by some well known designers, Wegner Peacock as one example. Which is a long winded way to say sorry, but I don’t recognize your (non-Windsor) chair. Maybe searching without “Windsor” could help find it?

@kyle-barrett  Did a little more searching this evening and came across these chairs by Greaves and Thomas.  The design and finish are similar, and they have the English connection.  What do you think?  I did some searching for G&T catalogues, and chairs on ebay.uk, etc, but have not seen my chairs yet.