I can not praise Sam enough, I really appreciated his help and guidance. Because of a few issues, mostly because of the traffic conditions, I have not yet been able to try it out, also thanks to Octopus Energy who's Customer Service team, tells me that it will get back to me in 24 to 48 hours, but I'm still waiting for them to get back to me. If you buy from these people, ask for Sam, he's fantastic.