UK's Best & Worst Energy Suppliers 2023: Which? Rankings Revealed! (2026)

The energy supplier landscape in the UK is a mixed bag, with some providers shining and others falling short, according to Which? rankings. But which companies are the heroes and villains in this story?

Scottish Power, EDF, and British Gas: The Big Three in the Hot Seat

These industry giants have been ranked among the worst energy suppliers, with overall scores below 60%. But here's where it gets controversial: it's not just about the numbers. Scottish Power, for instance, scored a meager 56%, primarily due to its poor handling of complaints. EDF and British Gas didn't fare much better, with scores of 58% and 59% respectively. But why? EDF's customer support accessibility and British Gas' struggle with complaint resolution and customer switching are the main culprits.

The Top Performers: E, Octopus Energy, and More

At the other end of the spectrum, E (Gas and Electricity) takes the crown with a score of 79%. Customers rave about their service, with nearly 90% willing to recommend them. Octopus Energy follows closely with 74%, and 100Green and Sainsbury's Energy are not far behind.

The Survey Says...

Which? conducted an extensive survey, gathering feedback from nearly 12,000 energy customers. They also assessed the inner workings of 17 energy firms, revealing some surprising insights. Which? editor Emily Seymour emphasizes the stark contrast between the top performers and the big names that are falling behind.

Customer Service: A Make-or-Break Factor

The rankings highlight the importance of customer service. While some companies excel at handling complaints and providing support, others struggle to keep up. This is a critical aspect, as customers are quick to switch providers when they feel undervalued or dissatisfied.

Industry Responses: Acknowledging and Improving

Centrica, owner of British Gas, acknowledges the need for improvement, citing a 20% annual reduction in complaints over the last two years. EDF and Scottish Power also respond, highlighting their commitment to enhancing customer service. EDF points to its Trustpilot rating as a testament to customer satisfaction, while Scottish Power emphasizes its high scores on the Citizens Advice scorecard.

The Bottom Line

The energy supplier market is a dynamic arena, with customer satisfaction at the forefront. While some providers are leading the way, others are urged to step up their game. As consumers, we have the power to choose, and our decisions can drive positive change. So, what's your take on these rankings? Do you think customer service is the ultimate differentiator? Share your thoughts and experiences in the comments below!

UK's Best & Worst Energy Suppliers 2023: Which? Rankings Revealed! (2026)
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