I found this company on Google and went with them because their quote was very competitive and the communication was great. From the 1st phone call to installation it was under a week! Vadim and his team were very friendly and professional too. The quality of the secondary glazing is very impressive- it is very well engineered, was fitted beautifully and the noise reduction is unbelievable, I never thought it would be so effective. I would 100% recommend them to anyone- a brilliant service.