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UK Energy Suppliers

In-depth guides to every major UK energy supplier β€” tariffs, reviews, switching tips, and how they compare.

Octopus Energy logo
Octopus Energy
Independent

The UK's largest and most innovative supplier

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British Gas logo
British Gas
Big Six

The UK's oldest and best-known energy brand

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EDF Energy logo
EDF Energy
Big Six

French-owned nuclear and renewables giant

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E.ON Next logo
E.ON Next
Big Six

The modern face of E.ON in Great Britain

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Scottish Power logo
Scottish Power
Big Six

Iberdrola-owned supplier with a green focus

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SSE Energy logo
SSE Energy
Big Six

Renewable energy from Scotland

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Ovo Energy logo
Ovo Energy
Independent

Carbon-neutral supplier with a digital focus

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Shell Energy (now Octopus) logo
Shell Energy (now Octopus)
β†— Absorbed

Acquired by Octopus Energy in December 2023

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Utilita logo
Utilita
Independent

The UK's leading prepayment meter specialist

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So Energy logo
So Energy
Independent

Straightforward, affordable green energy

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Good Energy logo
Good Energy
Independent

Pioneer of 100% renewable energy in the UK

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Ecotricity logo
Ecotricity
Independent

Green energy company and EV charging pioneer

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Outfox Energy logo
Outfox Energy
Independent

Low-cost challenger with transparent pricing

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Rebel Energy logo
Rebel Energy
⚠ Ceased Trading

Ceased trading April 2025 β€” customers moved to British Gas

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Bulb (now Octopus) logo
Bulb (now Octopus)
β†— Absorbed

The green challenger absorbed by Octopus Energy

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