Does anyone have any recommendations for double/ triple glazing companies in the area.

We would rather use a local firm than one of the national companies if their prices are comparable but this is the first time we've replaced windows so any advice welcome.

We are looking to replace the single glazing in our 2bed flat with UPVC double or triple glazing. This will involve replacing 4 windows, one of which is quite large and one set of French doors. Does anyone have any idea the kind of price we should be looking to pay for this amount of work? I just want to make sure I’m not ripped off. I’m wary of double glazing sales reputation!

Thanks in advance for any advice!