I've spoken to my mate, who used to work for StayBrite. He says there's a huge window-making company in Edinburgh that the likes of Staybrite buy their windows from. He'll try and track down the name tonight. He also reckons that, if there are no complex openings required etc, that you "could" get it done for £2K-ish. His advice is find a reputable window-fitter, not a big national company - you get the same windows, a non sales-driven company, and half the price. More to follow when I get more info.
Anyone seen Inkspot lately? He and I (as sigmundfreud) seem to be the only two left on Celebdaq. I'm really hanging on so he doesn't feel in solitary splendour. I suspect he's doing the same... Alternatively, some of you deserters might re-join.