The annual consumer verdict on Britain's energy suppliers is in, and the results reveal a stark divide in customer satisfaction. The consumer champion Which? has published its 2026 rankings, crowning a winner and highlighting several firms whose service is leaving households cold.
Top Performers and Customer Service Champions
E (Gas and Electricity) has been named the best energy supplier in the UK, achieving an impressive overall customer score of 79 per cent. The firm earned particular praise for its standout customer service and how easy it is for clients to get in touch when they need help.
Securing a strong second place was Octopus Energy, with a score of 74 per cent. They were closely followed by 100Green and Sainsbury’s Energy, which also performed well in the comprehensive survey of bill-payers' experiences.
The Struggling Suppliers: Complaint Handling Criticised
At the opposite end of the scale, several major brands found themselves languishing. Scottish Power, EDF, and British Gas were all ranked among the worst-performing suppliers, with each scoring less than 60 per cent.
Scottish Power received the lowest overall score of just 56 per cent. It faced heavy criticism for its poor handling of customer complaints. Both EDF and British Gas also struggled significantly with their customer service and their ability to resolve issues satisfactorily, according to the survey data.
What This Means for Your Bills
In light of the findings, Which? is advising consumers not to settle for poor value or shoddy service. The group emphasises that switching providers remains a powerful tool for saving money and improving service.
Importantly, they note that fixed tariffs are now reliably cheaper than the default energy price cap, offering a clear opportunity for locked-in savings. The message is clear: with such variation in service and cost, loyalty often doesn't pay.
The rankings, released on Monday 19 January 2026, provide a crucial snapshot for millions of households considering their energy options in the coming year.
