Used Auto Windscreens a couple of years ago to fix a chipped windscreen on our Ford Focus, paying a small excess due to our insurance company policy at the time. Within 2 years the "repair" had deteriorated so badly it looked like the original stone chip all over again. Called our current insurers, who sent out a different (but well-known) car windscreen repair company, who told me they couldn't patch-up the existing repair job as its simply not possible with the technology to do that, but they chap said that all their work is guaranteed for a lifetime so could have the entire windscreen replaced at no extra cost. When I said that it was actually Auto Windscreens that made the original repair job he pretty much told me I was screwed as they dont provide any guarantee what-so-ever of their work. Sure enough, I contacted Auto Windscreen and even though the original repair job was less than a couple of years old they would provide no guarantee of the work and told me that a new windscreen would need to be fitted at my own cost. So my advice to anyone thinking of getting a stone chip repaired is check out exactly what you are paying for first. Look at Auto Windscreen's website, there is no mention of their work being guaranteed and although they may be cheap, if the job goes bad you're on your own. There are plenty of other glass repair companies out there, shop around and make sure you get a guaranteed job (and one that doesn't fall apart within a couple of years). I know which company I will be using in future and it's certainly not Auto Windscreen!