I have used this company for checking a gas heating appliance and the result was successful and at minimum cost. More recently I had to phone for an emergency plumber on a Thursday afternoon, for problem with a blocked drain. Appointment given for following Monday 10am. Two guys arrived on time wearing masks. The ‘govnor’ listened when I explained the symptoms, diagnosed where the blockage was and both got on with a messy, difficult job efficiently and in a courteous way. For the company these were small jobs, and I would certainly use them if/when I need to replace a whole system.