We had 14 new windows, opted for the UPC sash and installed they look superb. The postman has just commented how good a job has been done and was genuinely surprised when I told him they were not wood. We are also having two replacement doors, one is fitted, another lovely job and the front door is ongoing, we are waiting for the encapsulated glass panels to be fitted. Derwent are not the cheapest but they do a quality job using a quality product. The three gentlemen (Mark, Mike and Ian) were pleasant and extremely efficient. Little or no mess at all and apart from the architrave requiring painting we have no redecoration work to do at all. We decided to go ahead based upon a recommendation from friends after we had viewed the windows they had had done. We visited the showroom and the whole process was made very easy by the helpful knowledgeable team, Jan doing the paper work, Alistair doing the ‘non-pressure’ selling and Rob doing the measuring.