My experience with them was a while back but even after a number of years I still feel that I should share just how terrible these people were to deal with.
At the heart of the issue is that they neither manufacture not do they install windows. The installer they hired dropped window and broke the frame. The Installer didn't want to pay for the window, neither did the manufacturer that said it had been shipped in good condition, neither did Ridley as it would cost too much to re-order. They (and the designer we hired) tried to persuade us to put up with a horrible fix. However the bad work didn't stop there: They insisted we didn't need a lintel (our Engineer said otherwise), they used a saw to literally cut through all of our bricks which made it harder for the next installer who said that a professional installer would have "teethed" the brick) The woodwork was so shocking literally plywood held together with a few nails!! . No insulation. Gaps where you could see daylight. Third floor window only held in with caulk (I was told the first time I tried to lean against it I would have ended up on the sidewalk. Literally the worst work I have ever seen. Ridley and the design firm argued the toss endlessly with us until we eventually insisted they remove their horrible work and went with Marvin (who were absolutely the BEST). Traumatising few months dealing with bullies.