Best answer by Mavis1
Yes these historic white meter things can be a nightmare. I may be wrong but i dont think anyone will accept a switch with them.if i was you i would contact scottish power and tell them you want to change a single rate tariff. They will have to change the meter,once done then you can switch.
Like i say another member may correct me.
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Hi ian whats the problem with your switch? Were here to help