We have a large old house and have been replacing the doors and windows in stages over the last twelve+ years. We've used Chorley UPVC every time. I chose them originally because they were the only double glazing company that didn't haggle. They gave me a highly competitive fixed price, and left me alone to think about it, with absolutely no pressure selling and no negotiation. Since then I've used them four times, and they recently (Aug 2021) finished the last couple of windows and two back doors. They're a brilliant old fashioned type of company, who sell top quality units and have a no nonsense approach to providing good service. They have been back a couple of times to adjust hinges years after fitting, with no quibbling about warranty periods etc. Great company, highly recommended.