Thanks!
Ok, so todays progress (impressive for 10:50, but I should probably have been doing work...).
Turns out the car had a new mid section last year, work done by a Renault dealer, so assume it is genuine, hope to get that sorted tomorrow, along with new 'stat. Also I have ordered a used interior, used standard Clio steering wheel (so existing one can be sent off for retrim), new thermostat, new wheel brace and new o/s door handle.
Once that is done, and the various parts fitted, there will just be a couple of minor dents, the wheel refurbs, and a good polish, and we should be about there!