If anyone comes across a Mark Cowler of Trade Windows. Was trading last year as M.C.Frames. Don't use him he is a fraud. Has no Certass, QA. or Ceta although they are displayed on his paperwork. He is not a paid up member. Cannot self certificate under building regs but he states he can. I paid him eleven hundred pound deposit but cancelled within four days under the doorstep selling rules and regulations. He would not respond to the phone calls, emails, recorded letters, until three weeks later, contacted me to tell me, my deposit was paid into his personal bank account where he had debts and it has been swallowed up, if I take him to court he'll pay five pounds a week. It would appear I am not the only victim of this person. It is hard to lose that much money when you have retired, that said it is hard for anyone to lose their money so I am putting this on site to warn others should they get a phone after going online for double glazing. These sites say they have checked traders ummmmmmm I think not or one would not have encountered this unsavoury character.