emergency servicing of apparatus for supplying electricity; plumbing repair advisory services; repair of water supply installations; installation, maintenance and repair of gas, electricity and water supply apparatus; emergency servicing of gas supply apparatus; installation and repair of bathroom heating devices; emergency roadside repair of vehicles; maintenance of plumbing; plumbing installation advisory services; advisory services relating to the maintenance of plumbing; plumbing; installation of water pipes; routine servicing of heating apparatus; plumbing and glazing services; repair of plumbing; installation, maintenance and repair of water supply apparatus; installation of equipment and apparatus for gas and water supply; repair of water supply apparatus; installation of plumbing; plumbing installation, maintenance and repair; advisory services relating to the installation of plumbing; maintenance of water purifying apparatus; plumbing services; installation of water supply apparatus; advisory services relating to the repair of plumbing; installation of plumbing systems; repair or maintenance of water purifying apparatus; routine servicing of ventilating apparatus; maintenance of apparatus for purifying water; emergency servicing of water supply apparatus; repair of apparatus for purifying water; plumbing maintenance advisory services