Greenbee uses Plusnet to provide its services. Greenbee is significantly more expensive if, like me, you download more than a minimal quantity of material every month.

My experience of its support has been very disappointing. I had expected that Greenbee's higher costs were to cover better service when you need it. As I write, I've had no broadband for a week as a result of a fault, and no indication of when it will be repaired. Calls to the Plusnet support line just lead to the response that the matter has been "escalated" to the fault team, they "endeavour" to deal with it within five working days, but no, I can't actually speak to anyone who actually knows what's going on and when it will be fixed.

They are also incredibly slow at sending out MAC codes.

If nothing actually goes wrong, Greenbee is an expensive and not particularly fast service. If there's a problem, you'll be messed around.