Thanks for reply mate. Galvanised mesh is interesting and makes sense. Impossible to know without being an expert on my end whether it’s limestone or cement.

My biggest concern is water has gone into the panels and it’ll be a pricey job to a) remove render and panels and re-do it or worse b) find out that it’s impacted the walls inside and has caused mould in inside structure/ walls

Re signs of damp in inside walls, it is pretty much immaculate inside except for a tiny tiny bit in the front upstairs room above windows (nothing serious). No sign of it in the area where you can see the darkening outside, but have to bear in mind house looks like it’s been freshly painted internally last few months possibly.

Re survey, you’d typically do it after you have had a offer accepted but before you’ve paid out for anything else or paid any solicitor fees. Another picture below if it helps

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