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The 8 Best Gas and Electricity Suppliers in London [2023]

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After conducting thorough research using credible sources, we have compiled a list of the top 8 best gas and electricity suppliers in London.

We have factored in and compared their prices, plans, customer service, and overall customer satisfaction to present the advantages and disadvantages of each supplier.

1. British Gas

Advantages:

  • Offers competitive fixed and flexible tariffs
  • Wide range of plans – from eco-friendly to smart home options
  • Excellent customer service with 24/7 live chat support
  • Rewards program and incentives for loyal customers

Disadvantages:

  • Possibly higher prices than smaller suppliers Mixed reviews on customer satisfaction
CONTACT DETAILS +441214960153
WEBSITE
GOOGLE BUSINESS PROFILE
ADDRESS23 Dartmouth St, London SW1H, United Kingdom
OPERATING HOURSMonday: 9AM – 6PM
Tuesday: 9AM – 6PM
Wednesday: 9AM – 6PM
Thursday: 9AM – 6PM
Friday: 9AM – 6PM
Saturday: Closed
Sunday: Closed
BEST FORGas and Electricity Suppliers

2. EDF Energy

Advantages:

  • Competitive tariffs for both gas and electricity
  • Offers renewable energy options
  • Highly-rated customer service – including a UK-based call center
  • Partnerships with energy-saving device manufacturers

Disadvantages:

  • Limited incentives for existing customers
  • Some complaints regarding billing and account management
CONTACT DETAILS 0800 111 999
WEBSITE
GOOGLE BUSINESS PROFILE
ADDRESS 
OPERATING HOURSMonday: 9AM – 6PM
Tuesday: 9AM – 6PM
Wednesday: 9AM – 6PM
Thursday: 9AM – 6PM
Friday: 9AM – 6PM
Saturday: Closed
Sunday: Closed
BEST FORGas and Electricity Suppliers

3. SSE (formerly Scottish and Southern Energy)

Advantages:

  • Excellent customer service, with UK-based call centers and live chat support
  • Fixed and variable tariffs available
  • Green energy options, with 100% renewable electricity
  • No Exit fee option

Disadvantages:

  • Slightly higher prices compared to some smaller competitors Complaints regarding billing errors
CONTACT DETAILS +44 345 026 2658
WEBSITE
GOOGLE BUSINESS PROFILE
ADDRESS 
OPERATING HOURSMonday: 9AM – 6PM
Tuesday: 9AM – 6PM
Wednesday: 9AM – 6PM
Thursday: 9AM – 6PM
Friday: 9AM – 6PM
Saturday: Closed
Sunday: Closed
BEST FORGas and Electricity Suppliers

4. E.ON

Advantages:

  • Highly competitive tariffs, both fixed and variable
  • Green energy plans available
  • Good customer service, with well-organized app and website
  • Reward program for loyal customers

Disadvantages:

  • Some complaints regarding billing accuracy Customer service can be slow at times
CONTACT DETAILS 
WEBSITE
GOOGLE BUSINESS PROFILE
ADDRESS 
OPERATING HOURSMonday: 9AM – 6PM
Tuesday: 9AM – 6PM
Wednesday: 9AM – 6PM
Thursday: 9AM – 6PM
Friday: 9AM – 6PM
Saturday: Closed
Sunday: Closed
BEST FORGas and Electricity Suppliers

5. Octopus Energy

Advantages:

  • 100% renewable energy options, with transparent tariffs
  • Excellent customer service – rated Good on Trustpilot
  • Flexible and competitive tariffs
  • Easy-to-use website and app for account management

Disadvantages:

  • No reward program or incentives for long-term customers
  • Limited options for customers without a smart meter
CONTACT DETAILS +448081641088
WEBSITE
GOOGLE BUSINESS PROFILE
ADDRESS5th-6th Floor, UK House 164, 182 Oxford St, London W1D 1NN, United Kingdom
OPERATING HOURSMonday: 9 AM–5 PM
Tuesday: 9 AM–5 PM
Wednesday: 9 AM–5 PM
Thursday: 9 AM–5 PM
Friday: 9 AM–4 PM
Saturday: Closed
Sunday: Closed
BEST FORGas and Electricity Suppliers

6. OVO Energy

Advantages:

  • Competitive fixed and variable tariffs
  • Highly-rated customer service – UK-based call center
  • 100% renewable electricity
  • OVO Rewards program for loyal customers

Disadvantages:

  • Limited green gas options
  • Some pricing discrepancies reported by customers
CONTACT DETAILS +44 330 303 5063
WEBSITE
GOOGLE BUSINESS PROFILE
ADDRESS 
OPERATING HOURSMonday: 9 AM–5 PM
Tuesday: 9 AM–5 PM
Wednesday: 9 AM–5 PM
Thursday: 9 AM–5 PM
Friday: 9 AM–4 PM
Saturday: Closed
Sunday: Closed
BEST FORGas and Electricity Suppliers

7. So Energy

Advantages:

  • Transparent and competitive pricing
  • 100% renewable energy options
  • Easy-to-navigate website and account management
  • Highly recommended by existing customers

Disadvantages:

  • Limited customer support hours
  • No rewards or incentives for customers
CONTACT DETAILS+443301115050 
WEBSITE
GOOGLE BUSINESS PROFILE
ADDRESSStudio 2, 114 Power Rd, Chiswick, London W4 5PY, United Kingdom
OPERATING HOURSMonday: 9 AM–5 PM
Tuesday: 9 AM–5 PM
Wednesday: 9 AM–5 PM
Thursday: 9 AM–5 PM
Friday: 9 AM–5 PM
Saturday: Closed
Sunday: Closed
BEST FORGas and Electricity Suppliers

8. Utilita Energy

Advantages:

  • Highly competitive tariffs, with no exit fees
  • Rewards program for loyal customers
  • UK-based customer service team
  • Flexible payment options

Disadvantages:

  • Limited green energy options
  • Complaints about billing accuracy and customer service response time
CONTACT DETAILS 
WEBSITE
GOOGLE BUSINESS PROFILE
ADDRESS 
OPERATING HOURSMonday: 9 AM–5 PM
Tuesday: 9 AM–5 PM
Wednesday: 9 AM–5 PM
Thursday: 9 AM–5 PM
Friday: 9 AM–5 PM
Saturday: Closed
Sunday: Closed
BEST FORGas and Electricity Suppliers

We hope this list was useful in helping you decide which gas and electricity supplier is the best fit for your needs. If you have any further questions, please don’t hesitate to contact us and we will be happy to answer them. Thank you for your time!

For more information on the best gas and electricity suppliers in London, Compare the Market has a comprehensive guide covering all of the major providers including British Gas, EDF Energy, SSE (formerly Scottish & Southern) and many more.

It is a great resource for anyone looking to save money and find the best deal.

Additionally, they have customer reviews on each supplier so you can read what existing customers think before making a decision.

With their easy-to-use website and live chat support, Compare the Market makes it easier than ever to compare gas and electricity tariffs and make an informed decision about which one is the right fit for you.

So if you’re ready to switch to a new supplier and save money on your energy bill, be sure to check out Compare the Market today.

Happy shopping.

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