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Last human-reviewed on 23 July 2026 · Editorial policy
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Octopus continues to lead the UK market on customer service and complaint handling, backed by genuinely competitive smart tariffs and strong financial backing. The clear front-runner on our intelligence dashboard.
Compare SupplierBacked by ESB, So Energy combines competitive fixed tariffs with consistently strong service scores. A solid mid-market performer.
Compare SupplierThe UK's largest supplier remains financially rock-solid but service and complaint metrics continue to lag the market, with smart-meter billing delays a recurring theme.
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