In one word, awful! AVoid at all costs. Ongoing since November 2020... Chat thread goes on for hours, passed from one person to another, full of excuses ; engineer missed the arranged appointment promised £30 compensation ( still waiting ) system won’t let them book another engineer , month later same excuse, don’t call you back, estimated bills never fixed when given actual readings. Can’t get into online account, temporarily‘unavailable’ I have raised complaint but will follow up in writing. Looking for new supplier, totally fed up. They can now sort it out I won’t be making contact again. DONT GO With BG