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Best and worst energy companies for 2019

Find out which gas and electricity firm has the best customer service, bills, complaints handling, helps you save energy and best value for money.

Revealed: the quickest way to contact your energy company

Find out whether it’s fastest to call your energy company or use its live chat, plus how long you’d expect to wait for a reply to an email. Which? investigated 38 gas and electricity companies to find the fastest customer responses.

Londoners are least likely to switch energy supplier

Londoners are least likely to switch their gas and electricity supplier. Find out how your region compares for energy satisfaction and switching.

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