How to Choose the Best Double Glazing Companies Near Me Be on the lookout for accreditations if in the market for windows with double glazing. These include FENSA, a government-authorised scheme that monitors building regulation compliance for replacement windows. Top double-glazing companies are Everest, Anglian Home Improvements (AHI), Safestyle UK, http://sport1.ge/index.php?subaction=userinfo&user=dibblelotion62