I had my two Windows and door installed 2016 , The fitter turned up on his own I wish I had sent him away!!! I ended up helping to carry window upstairs and lift bottom window in whilst he packed it .!! I am a woman in my 50's.! Which meant it wasn't finished installation until nearly mid night. I am so disappointed ,I contacted them last Jul :/ August as my window would not shut in alignment and the door lock kept turning but not unlocking ( this is my only exit)They don't have a problem with sending fitters out when you can finally get through to them. BUT to get the parts that need replacing is whole new ISSUE!! He told me the window was out of alignment but couldn't be moved as it would put my door out as it's one unit but that's ok because it's with in regulations ,it's still the same today . The old wooden window which was removed was fitted better. The window catch was broken that you move to pull the window back , but I'll bodge it up for now and order you a new one that was last August and I'm still waiting! The knocker kept coming out of its housing he was meant to bring one when he came but guess what no knocker when he came back in December yes December he brought a knocker , but just a plain knockers not my nice one I refused him to put it on , but because it hadn't been replaced in August a back bolt had sheared off so he bodged it, and yes I'm still waiting , !! I now have two water leaks from the seal around or from my front door .!!!!! They give a ten year warranty for fitters maybe but getting anything totally fixed is a night mare I'm at the end of my teather and I now have no option but to take it further, it's a shame as I had great expectations using a big company , they use the hard sale but can't back it up.