Highly recommended local joinery company. Nick and his very competent and qualified team produce excellent joinery specialising in bespoke windows, doors and staircases. Traditional and modern. Their sash windows (of which I’ve had them manufacture and installed 100’s!) are of an excellent quality, they can be made to match existing with high performance double glazed glass and are used by many local companies but its a lot better value for money to go direct. They are a local business, based on the outskirts of Cambridge that produce all of their products here in their fully equipped joiners shop that I’m sure they’d be happy to show any potential customer around. I know believe they offer an insulation service too, Fensa registered. I recommend you get a quote for any joinery you’re considering.