If there were zero stars I’d award them less than that. Came to fix two radiators. Didn’t fix but advised the system would need flushed. Then serviced my boiler, which was working fine before the service. Then it wasn’t….after the service! He checked and said parts (gaskets) were in stock and he would be back next morning to fix but I couldn’t use the boiler in the meantime. I am 75 years old, live alone, in Aberdeen, in January and we were under 2’ snow, and minus 6°C Shorty after he left I received a text from BG saying they didn’t in fact have the part as it was obsolete but they would source for me. Long story short…..five days later in freezing (literally) conditions in an old house with no heating or hot water, numerous calls (literally hours) to BG, engineers not turning up, calls ‘disconnected’ and advice such as ‘boilty a kettle’ for baths/showers. You couldn’t make it up. 100% the worst company in Britain for caring about its customers.