The chap seemed very good - they'd be tilt-and-turn, roughly 2m x 90cm... There'd have to be a non-opening panel at the foot of each due to the size of the panes. The glass would be 2 x 60mm panes with 20mm in between (not vacuum, the chap said that's not possible as glass is porous). The sills would be mahogany. He seemed reputable; he wanted me to sign up on the spot but didn't push it & said his quote would still stand. The quote is £7.7K - I think that's inc VAT. Weatherseal were my other quote; they were very aggressive. They quoted £5K rock bottom but were insistent I sign up then and there (I refused) and they said the price will be over £8K as a result (I don't believe them). This other chap said he thinks that Weatherseal's windows are rubbish and they don't fit the specs that they show you when they come round. What does everyone think?