Watch out for big names like Anglian, I can't say what their service is like but if they come visit they pester the hell out of you, give you the buy-it-now or you'll never get it at this price speach (which they will gladly give you for 1 1/2 hours) and in the end, most of the other quotes were in the £2000 range for 1 gigantic window, 1 large window and 1 regular sized window. What was Anglian's quote? £6500!!!! What a total rip-off.