The annual ranking of energy suppliers by Which? has been released and Scottish Power has come out at rock bottom.
In a survey of over 10,000 members, the consumer champion evaluated which firms have remained "calm in a crisis" – and which have let some customers down.
Coming out on top of the list of 15 was Octopus Energy, gaining the title of Which? recommended provider for the sixth year in a row. SSE Energy Services ranked third to last whilst Scottish Power was revealed as the worst rated supplier.