Great hub! we have a couple drains running slow and haven't had a chance to buy draino yet, so these tips will be great to try! Thames water became responsible for maintaining and repairing private sewers and lateral drains in rushmoor on october . What type of tradesperson do you need? A combi (or combination) boiler is an ingenious space-saving idea, and an increasingly popular choice in uk homes in fact, combis now account for well over half of all the new domestic boilers installed in britain.