Had a new boiler installed by BG in Sept '18 and was rather happy with the installation and engineer attitudes, and gave them a very good review against scores of poor reviews. A year later I received an email that unless I had the boiler serviced, their 5-year warranty would be nulled. I was impressed with their reminder. I called to book, and was given an appointment 9-10 weeks into the future (!!!), that they were so fully booked. Come the day, I take time off, and no one turns up and no reasons nor apology received. When I approached them to enquire a few days later, I was told yes there had been a booking for me but they had a technical issue (!!), and the engineer did not turn up. At least they acknowledged that there had been a booking, for this I give them 2 stars. Again they offered me a new appointment 9-10 weeks into the future. I asked if they could not kindly prioritise mine as they had messed me up. I was told I had to take what was available. This 'take it or leave it (or your warranty will be nulled) is the attitude they have to get out of. They should heed the scores of negative feed back that they receive.