Plumbing services; plumbing installation, maintenance and repair services; installation, maintenance and repair of sewerage, waste water and storm water drains and pipes; renovation and servicing of plumbing; cleaning and unblocking of plumbing; clearing of tree roots from pipes and drains (plumbing services); leak detection; pipe location services; cctv surveying of pipes and drains; drainage services; land drainage; roof plumbing; maintenance and repair of roof guttering and downpipes; gasfitting; maintenance and repair of gas installations and equipment; repair of gas supply systems; rental of plumbing apparatus; rental of drainage pumps; providing information, including by electronic means and via a global computer network, about all of the aforesaid services