We make it straight forward for you to buy all your DIY products under one roof. From aggregate to boilers we sell over 37,000 products from the UK's leading brands. We have one of the UK's largest ranges of tools, insulation, boilers, radiators, bricks and much more. Whether you are a trade professional or an experienced DIY person then you will find everything you need here at BSO.We are based in Banbury and sell from our showroom and online. You can either order online or visit us at our showroom headquarters.Building supplies online. BSO offer cheap insulation plumbing & heating and power tools online. Over 45,000 products for next day delivery online or over the phone before 12:00pm.