British Gas: tariffs, customer service and switching

About the supplier

British Gas is a domestic gas and electricity supplier in Great Britain and one of the six suppliers Ofgem identifies as large suppliers. Its official website also covers other home services, which are separate from the energy tariff itself.

Ofgem's list of large suppliers is not a current market-share ranking, and this page does not rank suppliers by size.

Customer-service rating

Citizens Advice energy supplier rating, April to June 2026

This rating measures customer service during a defined period. It is not a tariff-price ranking, a review score from energy.org.uk, a guarantee of your future experience, or evidence that a supplier is cheapest.

Tariffs and eligibility

British Gas's official information covers fixed and variable gas and electricity tariffs. Get a personalised quote and check the unit rates, standing charges, term length and any exit fees before comparing it with other offers.

Rates, availability and eligibility change, so this page does not list current prices or deals.

British Gas official tariff information ↗ (external website, opens in a new tab)

How to compare a quote

Compare the complete annual cost, not just a headline unit rate. Check:

• Electricity unit rate
• Gas unit rate
• Electricity standing charge
• Gas standing charge
• Estimated annual usage
• Payment method
• Tariff end date
• Exit fees
• Discounts or account credits
• Smart-meter requirements
• Time-of-use periods
• Export tariff conditions, where relevant

Contact and account support

Use British Gas's official website for current telephone numbers, opening hours and online account options. Contact details change, so we do not copy them here.

British Gas official contact page ↗ (external website, opens in a new tab)

Complaints

1. Contact British Gas and allow it to investigate.
2. Ask for a deadlock letter if the complaint cannot be resolved.
3. If the complaint remains unresolved after the applicable period, check whether it can be taken to the Energy Ombudsman.

Extra support

The Priority Services Register is a free service for eligible people who may need extra help, for example because of age, health, disability or another circumstance. It can cover advance notice of planned interruptions, accessible bills and password schemes. Registering does not reduce energy prices.

Switching

• Check the new tariff's complete annual cost for your usage.
• Check whether your current tariff charges exit fees.
• Note your current contract end date.
• Check any account credit or debt on your existing account.
• Take final meter readings on the switch date.
• Keep your final bill.
• Check whether your smart meter will keep working in smart mode.
• Consider whether bundled services or rewards affect the comparison.

Understand energy tariffs →

What this profile assesses

energy.org.uk does not sell energy tariffs and does not rank suppliers by price. This profile combines dated independent customer-service information with links to official supplier information. Tariff availability, rates and eligibility can change, so check the supplier's current terms before switching.

Frequently asked questions