Fixed
Your unit rates are locked in for the length of your contract, protecting you from price increases. Ideal if you want certainty over your energy costs.
What is British Gas?
Also known as Scottish Gas in Scotland and Nwy Prydain in Wales, British Gas is the UK's oldest gas and electricity provider.
It supplies energy to more than 8 million homes in the UK, making it the biggest energy supplier in the country. It is part of the Centrica Group and is one of the 'Big Six' energy suppliers.
The company offers smart meters, including Hive smart heating thermostats, as well as boiler cover.
What energy tariffs does British Gas offer?
British Gas offer a number of different tariffs to suit your needs, including:
What is PeakSave?
PeakSave rewards customers for shifting their electricity usage to off-peak or greener energy times. Every Sunday from 11am to 4pm, known as PeakSave Sundays, you get half price electricity, with the reduction credited back to your account or meter.
There are also PeakSave Green Flex alerts, which are short one or two hour events where you can get half price electricity. They take place when renewable generation is high, such as during sunny or windy periods.
PeakSave is open to all British Gas electricity customers who have a working smart meter, regardless of which tariff they’re on. The deal applies on top of your existing tariff; it doesn’t require switching plans or paying extra.
What is Economy 7?
Economy 7 is an energy tariff that allows you to benefit from cheaper rates depending on the time of day/night you use energy.
In a nutshell, you’ll pay less per kWh for any energy used during the night. Indeed, it’s called Economy 7 because the cheaper rate is available for seven hours every night.
If you’ve got a British Gas-installed meter, the reduced-rate period runs from 12am-7am during winter months and 1am-8am during the summer.
If your meter wasn’t installed by British Gas, the cheaper tariff period will usually run for seven hours, anytime between 10pm and 9am. If you want to know the specific times, it’s best to get in touch with British Gas.
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How to switch energy provider
Whether you’re looking for cheaper rates, greener energy, or more flexible terms, the switching process is simpler than you might think.
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Decide what to change
Choose whether to switch to a new supplier or pick a different tariff with your current one. What matters most to you? Price? Flexibility? Green credentials?
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Check your current deal
If you’re on a standard variable tariff, you can switch anytime; if it’s fixed, check if there’s an exit fee.
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Compare deals
Compare tariffs with MoneySuperMarket. Consider price, customer service, and special features like EV charging or green energy.
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Sign up with a new provider
Apply online or by phone. Your new supplier will handle the switch, and you’ll have 14 days to change your mind.
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Finalise the switch
Choose your switch date, take a meter reading, and pay your final bill. If your old supplier owes you money, they must refund you within 10 working days of your final bill.
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Know your rights
If your switch is delayed, you may get £40 compensation. You can cancel within the cooling-off period without a fee.
How to contact British Gas
There are several different ways to get in touch with British Gas.
One way is through its online live chat, available on the British Gas website. The virtual assistant is available 24/7, otherwise, you can connect to an advisor 7am-10pm Monday to Friday, and 8am-6pm Saturday to Sunday.
You can also call British Gas. Depending on what you’re calling about, there are several different numbers to contact:
Energy enquiries: 0330 100 0056 open Monday to Friday 9am-5pm
Energy bills: 0333 202 9804 open Monday to Friday 9am-5pm
Home services and boiler emergencies: 0333 009 5784 open Monday to Friday 9am-5pm, and 24/7 for boiler emergencies
Meter emergencies: 0333 009 6135 open 24/7
There’s also the email address customerservice@britishgas.co.uk.
Our expert says…
Will fixing my rate save me money?
It's worth thinking ahead and bearing in mind that a fixed rate energy deal could save you money during the coming months. Switching to a fixed rate energy tariff can protect you from future energy price volatility and save you hundreds of pounds over the course of the year.
More and more energy providers are releasing tariffs for new customers, so run a comparison and see if you could switch and save money on your energy bills.
Ashton Berkhauer Home & Utilities Expert
Frequently asked questions
Can I switch to British Gas if I’m currently with another supplier?
Yes — the switching process is simple and usually takes about 5 working days with no interruption to your supply.
Will I be charged for leaving my current supplier?
Check your current tariff’s terms — some fixed plans have exit fees, but many don’t. British Gas doesn’t charge you to join.
Will my gas and electricity be disrupted during the switch?
No — your supply continues as normal, with no loss of energy during the changeover.
Does British Gas offer dual fuel discounts?
Yes, taking both gas and electricity from British Gas can sometimes save you money compared to separate suppliers.
Can I get a smart meter with British Gas?
Yes, smart meters are offered free of charge, allowing you to track energy usage in real time.
Is British Gas customer support UK-based?
Yes, British Gas has UK-based call centres for most customer queries.
More expert energy guidance
Reviewed on 22 Dec 2025