If you are wondering, “Who is cheaper than British Gas in 2025?” Well, you are not alone. This is a question that many people have. Since April 2025, the average UK household energy price cap has risen to 1849 euros. With this trend, many are searching for more affordable, reliable alternatives other than the biggest supplier in the country.
We have brought you a clear, fact-based breakdown of which energy suppliers are currently offering cheaper prices than British Gas. Of course, there are many ways to switch from one gas supplier to another. We will tell you how Switch Squid can make the switching process easy. Keep reading!
Top and Cheaper Alternatives to British Gas Supplier: Why They’re Cheaper
- Octopus Energy: Tariffs typically £15–£25/year below the price cap
- Sainsbury’s Energy: Often undercuts British Gas, adds Nectar points, and offers green energy
- ScottishPower: Fixed deals are often lower than British Gas
- E.ON Next: Competitive fixed tariffs, strong green offering
- OVO Energy: Fixed and variable tariffs comparable to or cheaper than British Gas
- Outfox the Market: Among the lowest variable rates in the UK
Why Are These Suppliers Cheaper?
These suppliers offer cheap deals due to several reasons. For instance, if you are a new user, they have introductory offers that are incentives or fixed deals often below the price caps to attract switchers. And they focus on supplying green energy through renewable energy resources. Companies like Octopus and E.ON Next are sometimes passing savings on to new customers. Furthermore, newer suppliers and challenger brands often tend to run leaner operations with cheap prices.
Annual Cost Comparison (Medium Usage):
| Supplier |
Estimated Annual Cost |
| British Gas |
£1,849 (dual fuel, average home – price cap) |
| Octopus Energy |
~£1,823 (typically £15–£25 below cap) |
| ScottishPower |
~£1,790–£1,820 (depending on tariff) |
| Sainsbury’s Energy |
£20–£40 below cap + Nectar rewards |
| E.ON Next / OVO / Outfox |
Comparable or better than British Gas, depending on tariff |
Who is Cheaper than British Gas in 2025?
If you are planning to switch from British Gas, it can save you a fortune and even get greener energy or better customer service. Here are the main contenders and a comparison.
1. Octopus Energy
- Trustpilot: 4.8/5 (over 510,000 reviews)
- Which? Score: 74% (top-rated in 2025)
- Pros:
- Consistently cheaper than British Gas on both fixed and variable tariffs
- 100% renewable electricity on all tariffs
- No exit fees on most plans
- Award-winning customer service (Which? Recommended Provider, uSwitch ‘Supplier of the Year’)
- Cons:
- Some tariffs may require a smart meter for best rates
- Summary:
- Octopus Energy is the UK’s biggest electricity supplier and a customer favorite, with excellent value, green credentials, and a reputation for innovation and transparency. If you want to save money and go green, Octopus is a top pick.
2. Sainsbury’s Energy (via E.ON Next)
- Trustpilot: 4.6/5 (over 3,000 reviews)
- Pros:
- Tariffs regularly undercut British Gas, with exclusive deals for Nectar card holders
- 100% renewable electricity
- Free smart meter installation
- Access to energy efficiency upgrades (discounts on boilers, solar panels, EV chargers)
- Cons:
- Some complaints about Nectar points not being credited
- Summary:
- Sainsbury’s Energy, powered by E.ON Next, is a strong value alternative—especially for Sainsbury’s shoppers or anyone wanting green energy with added perks.
3. ScottishPower
- Which? Score: 59%
- Pros:
- Cheaper than British Gas on many tariffs
- Good for customers needing extra support or easy switching
- Invests in UK wind farms and green hydrogen
- Cons:
- Low customer satisfaction (value for money, complaint handling, and clarity of bills)
- Scored poorly for meeting smart meter targets
- Summary:
- ScottishPower is a major supplier with a focus on renewables, but customer service and value lag behind rivals. Worth considering for green energy, but read reviews first.
- Read the full ScottishPower review
4. Utilita
- Trustpilot: 4/5
- Pros:
- No standing charges (unique among major suppliers)
- Free smart meters for all customers
- Focus on pay-as-you-go/prepayment customers
- Cons:
- Higher unit rates for first units each day
- Not a green energy supplier
- Billing and customer service issues reported
- Summary:
- Utilita is best for prepayment customers or those who want to avoid standing charges, but not the cheapest for everyone. Customer service can be hit or miss.
5. E.ON Next
- Trustpilot: 4.3/5 (over 143,000 reviews)
- Pros:
- Competitive fixed and variable tariffs, often below British Gas
- 100% renewable electricity
- Good smart meter rollout and UK-based support
- Cons:
- Some tariffs have higher standing charges
- Summary:
- E.ON Next is a solid all-rounder with green credentials and strong customer feedback. Great for those wanting a big supplier with modern features and eco options.
- See E.ON Next reviews and tariffs
6. OVO Energy
- Trustpilot: 4.5/5 (over 197,000 reviews)
- Pros:
- 100% renewable energy on select tariffs
- Simple, transparent pricing
- Good for electric vehicle owners and green upgrades
- Cons:
- Not always the absolute cheapest
- Some tariffs have exit fees
- Summary:
- OVO is a popular choice for green energy and straightforward deals, with a strong customer reputation and innovative extras.
7. Outfox the Market
- Pros:
- Among the cheapest for dual fuel and variable tariffs
- Low standing charges
- Cons:
- Fewer extras and less brand recognition
- Customer service can be less responsive than larger suppliers
- Summary:
Why switch now?
In April 2025, the price may have risen by 6.4% and may rise again in the future. Other than this supplier, there are a lot of cheaper and reliable suppliers out there. Since there are cheaper deals, you can try considering them if they are actively below the pricing cap. This is the strategy they use to introduce new customers. With Switch Squid, you can compare live tariffs, lock in a fixed deal for better profits. We will assist you in switching within minutes.
How to Switch and Save?
When switching to a new energy supplier, there are many things to consider. Using Switch Squid, compare live tariffs to see the latest deals for your posts and usage. There are fixed deals, green energy, or rewards like Nectar points. Ready to switch? Compare energy prices now with Switch Squid.
