UK business energy suppliers: who are they?

There are many companies selling gas and electricity to UK businesses, from household names to specialists that only serve organisations. This guide lists the main names that comparison and broker sources show as active, explains the difference between suppliers and intermediaries, and shows how to check who you are dealing with. It is a starting point, not a ranking or recommendation, and it is not a complete licence register.

Supplier, broker, comparison site: three different things

• A supplier sells you the energy and bills you. It holds a licence from Ofgem.
• A broker (a third-party intermediary, or TPI) arranges a contract between you and a supplier and is usually paid commission by the supplier, built into your prices.
• A comparison site shows quotes and is generally paid commission by suppliers.

Brokers are not yet directly regulated by Ofgem. Government has said it intends to appoint Ofgem as regulator when parliamentary time allows, and Ofgem has said it is preparing, with initial proposals expected in 2027. In the meantime, suppliers may only work with brokers signed up to a recognised dispute scheme, and broker costs must be shown in your contract's Principal Terms. See are energy brokers regulated? and broker vs direct vs comparison site.

Suppliers commonly seen in the business market

One commercial broker's supplier list, last modified on 2 November 2026, names the firms below. We have not checked it against Ofgem's licence list, so treat it as indicative. Where we found ownership changes from company announcements, we note them.

Supplier	Note
British Gas (business)	See our British Gas Business guide
EDF	See our EDF business guide. Drax sold most of Opus Energy's small business customer book to EDF in 2024.
E.ON Next	See our E.ON Next business guide. E.ON completed its purchase of OVO's retail business in October 2026.
Octopus Energy for Business	See our Octopus Energy business guide
SSE Business Energy	Run by an SSE company, separate from OVO; see our SSE and OVO guide
Drax	Drax says it has left the small and medium business market to focus on larger industrial and commercial customers, having sold Opus Energy's SME customers in 2024 and 2025 (see EDF above).
ScottishPower, TotalEnergies, Engie, Shell Business Energy, Pozitive Energy	Named on the list; we have not checked each one's current status independently. Shell's household arm went to Octopus in 2023, so check who now holds any Shell business contract.
Good Energy, United Gas & Power, Ruby Energy, Maxen Power	Named on the list; not independently checked

The market changes: suppliers are bought, merged, renamed or stop trading, and trading names do not always match the company that holds your contract. Check your latest bill for the legal entity. If a supplier fails, you are normally moved to a new one without losing supply; see what happens if your supplier goes bust.

Which suppliers serve which size of business?

Suppliers differ in which customers they want: some quote small businesses online, while others focus on larger sites and deal mainly through brokers or sales teams. We have not verified each supplier's current policy, so ask each firm directly. Your size also decides which protections you get. See what counts as a microbusiness.

To keep this fair: we do not rank suppliers, and "most suppliers" and "biggest" claims are not backed by data on this page.

How to check a supplier

1. Find the legal name. It is on your bill and contract.
2. Check licensing. Ofgem publishes the suppliers it licenses; check there rather than relying on a sales call.
3. Read the Principal Terms. The key price, term and, if a broker is involved, the broker's commission are summarised there.
4. Look at the complaints route. Micro and small businesses can use the Energy Ombudsman after eight weeks or a deadlock letter.
5. Check credit and deposit terms. Some suppliers ask for security deposits. See security deposits and credit checks.

A simple price-comparison sum

Prices are only comparable on the same terms. Say your business uses 20,000 kWh of electricity. Supplier A quotes 27p/kWh plus 60p/day; supplier B quotes 26p/kWh plus 90p/day. A: 20,000 × £0.27 = £5,400 plus 365 × £0.60 = £219, total £5,619. B: 20,000 × £0.26 = £5,200 plus 365 × £0.90 = £328.50, total £5,528.50. B is £90.50 cheaper before VAT in this example, even though its daily standing charge is higher. Always compare the whole annual cost. Our cost calculator does the sum for you.

What the market averages say

The Department for Energy Security and Net Zero reports that the average non-domestic price in Q2 2026 was 24.51p/kWh for electricity and 5.28p/kWh for gas, including the Climate Change Levy. These are national averages across all sizes, not quotes. There is no Ofgem price cap on business energy, and no cooling-off period once you agree a contract, so check the details before you sign.

Why the same supplier can have different prices

Two businesses on the same street can get different quotes from the same supplier. Price depends on your region, annual use, meter type, credit profile, contract length and how much commission is built in if a broker is involved. Standing charges also vary by region; see why standing charges vary. Quotes are normally time-limited and withdrawn quickly when wholesale prices move, which is why you should gather quotes on the same day.

Where to complain if things go wrong

Complain to the supplier first. A micro or small business can then go to the Energy Ombudsman after eight weeks or on receiving a deadlock letter, within 12 months. The Ombudsman also covers brokers that are members of its scheme. See energy disputes and the Ombudsman and what is a QDSS. We are not affiliated with any supplier mentioned on this page.

Supplier changes to watch for

Companies in this market are bought, merged and renamed, and a brand on your bill may not be the company that signed your contract. If your supplier is sold, your contract normally continues on the same terms, but check any letter you receive carefully and keep the original Principal Terms. Treat unsolicited calls claiming to be from your supplier with caution; see why you get cold calls about business energy.

Next steps

1. Pick two or three suppliers and read the guides above for contact and complaints routes.
2. Collect your annual kWh, MPAN and MPRN. See find your MPAN and MPRN.
3. Compare whole-year costs and contract length, not just the headline rate.
4. Read how to switch business energy before you agree.