We finished off the other two chairs today - so all of the tools are back in the garage and the conservatory no longer looks like a workshop :-)
This is one of the two Gill found on eBay - same manufacturer, similar age but not the same model as the original chairs we had. With the fabric replaced and the back rests extended though, they look ok next to the originals. A before shot in the extra.
I've had a go at getting the colour balance close to my blip of the first chair to be done, not with any great success!
We'll have to clean up the wood finish on the table next - but that should not be a long job.