We just had 12 of our old single glazed windows replaced with new double glazed units by Steve and his team (Steve 07966 493 641). Excellent service and quality, would definitely use them again and recommend to anyone. The guys were exceptional, very tidy and everything was put away at the end of the day so you wouldn't even know we had work going on. Steve was on top of everything and kept us up to date throughout. We had one minor issue with the obscured windows for the bathrooms from his supplier but this was resolved very quickly again with great service. If you're considering repairing/replacing your windows, I would definitely recommend giving Steve a call for a quote.