I can't say who is calling because I never asked them to call me. It could be Scottish and Southern Electric, but I don't know. Playing it safe because I never asked them to call me. They call all hours of the day.
This is genuinely Scottish Southern Electric as they've been harassing me for the past 10 months with letters, txt messages, emails and now calls from this number saying I need to have a smart meter fitted. I told them i dont want a smart meter and if they don't stop contacting me I'll change energy supplier.