I had four windows, a glass door and a skylight replaced in my London flat in June 2014. The work was done with great care over a period of four days and I was very pleased with both the quality of the new windows and the workmanship. The two fitters were helpful and polite, they turned up on time and barely stopped work all day, kept going by my cups of tea (and the odd biscuit). This company is not the cheapest option, but you get what you pay for and I am confident that my new windows etc will serve me well for the foreseeable future. Problem solved.