Who Is My Supplier?
Find out who supplies the electricity, gas and water to your UK business premises. Pick a utility, enter your postcode, and we walk you to the registered supplier, free, no login.
Who is my electricity supplier?
Postcode lookup for your network operator, an MPAN finder and decoder, then we confirm the registered supplier.
Also finds your MPAN
Who is my gas supplier?
Postcode lookup for your gas network, an MPRN finder and validator, then the exact route to your registered supplier.
Also finds your MPRN
Who is my water supplier?
Postcode lookup for your regional water wholesaler, then how to identify and switch the retailer that bills you.
Wholesaler and retailer
After your network operator instead? Find your electricity DNO, gas transporter and water wholesaler in one search.
How this helps your business
To find who supplies your business, pick the utility above and enter your postcode. There is no single register that names the supplier for every meter: gas has the national Find My Supplier service, electricity has no free public register at all, and water splits the answer between a regional wholesaler you cannot change and a retailer you can. Each tool follows the correct route for its utility, which is why the answer takes one postcode and a couple of minutes rather than a morning of phone calls.
The question usually comes up at the worst moment: a new premises with no paperwork, an unexpected invoice, or a renewal letter from a company you do not recognise. In each case the supplier you find is often billing deemed or out-of-contract rates, which are set unilaterally and are almost always higher than a tendered contract. Identifying the supplier is step one; the saving comes from confirming your contract end date and tendering the renewal before the window closes.
Purely Energy is a B-Corp certified UK business energy and water consultancy. We manage 2,000+ sites and more than £100M of annual energy spend for 500+ business clients, with 30+ suppliers on our panel, and we work for you, not the suppliers. For any UK business premises we retrieve the registered supplier, meter numbers, contract end date and current rate free via a Letter of Authority, then tender the market: clients typically save 15 to 30%. You can compare the market on our business energy suppliers directory or request a quote and we will do the legwork.
Who is my supplier: frequently asked questions
- How do I find out who supplies my business?
- Pick the utility above (electricity, gas or water) and enter your business postcode in that tool. Each tool identifies the network or wholesaler for your premises, then walks you through confirming the registered supplier: from a recent bill, from the industry records, or by letting Purely Energy retrieve it free via a Letter of Authority. The whole process takes a couple of minutes per utility.
- Is there one website that shows all my suppliers?
- No. Each utility keeps its records separately. Gas has the national Find My Supplier service, electricity has no free public register (the supplier is confirmed via your bill, your network operator or a Letter of Authority), and water splits the answer between a regional wholesaler and a switchable retailer. That is why this page splits into three tools: each one follows the correct route for its utility.
- Are my business gas and electricity supplied by the same company?
- Often not. Every meter is registered separately, so a business premises can have a different supplier for gas and for electricity, each with its own contract end date. Multi-site businesses often inherit a patchwork of suppliers across the estate. Check each utility separately with the tools above, then note every contract end date: aligning them is one of the first savings a procurement review delivers.
- What details do I need before switching supplier?
- For electricity you need your MPAN (the 21-digit Supply Number on your bill), for gas your MPRN (the 6 to 10 digit meter point number), and for water your SPID (supply point ID, shown on your water bill). You also need each contract end date, because most business contracts only allow a switch in a fixed renewal window. The electricity and gas tools above find your MPAN and MPRN for you.
Let us confirm all three in one go
One postcode and a free Letter of Authority: we confirm your electricity, gas and water suppliers, meter numbers and contract end dates, then tender 30+ suppliers for a better rate.