Very knowledgeable reliable accurate reasonable and extremely helpful. Don't waste your time effort and money on other glass suppliers as Bristol Glass Proccing will out perform them in all these aspects. I fitted an upstairs shower from scratch and my only other recommendation is ensure its dead level and the tiles are square flat and perpendicular to the shower tray. BGP will make you a shower screen in the best glass that looks like your in the Hilton on permeant holiday - and as I'm also an old school engineer with in-built hard wired attention to detail I'm not over egging this.