Why most MPRN guides get it wrong

Most MPRN guides describe what the number is and where to read it off a bill, then stop. That framing makes it feel like routine admin.

In reality, the MPRN is the only key that unlocks the contract you were enrolled on the day you moved in. Until a new supplier holds it, you stay on a deemed contract: the legal default for anyone using gas without an agreement in place, priced at or near the top of the supplier's range. Every day on a deemed tariff is a day of paying the most expensive rate on offer.

6 to 11

Digits in a GB MPRN

No internal structure to decode

4

GB gas transporters

Cadent, NGN, SGN, Wales & West Utilities

£200

Saved by switching off the deemed tariff within 30 days

Round number estimate, confirm before publish

What an MPRN actually is

The Meter Point Reference Number is a unique identifier for a gas supply point in England, Scotland or Wales. It is assigned centrally by Xoserve, the gas industry's central data services provider, now operating under the Correla brand.

Three properties matter:

  • it contains between 6 and 11 digits and uses only numerals, never letters;
  • it has no internal structure that can be decoded, unlike the 21 digit MPAN for electricity, so reading it tells you nothing about your meter or supplier;
  • it stays attached to the gas pipe at the property, not to you, so it does not move with you when you change address.

Worked example: a Leeds semi might be 1574863920; a Brighton studio flat might be 980153. Both valid. No pattern, no region code, no checksum to verify, only the central register knows which pipe it points to.

One exception: an MPRN starting with 74, 75, 76 or 77 sits on an Independent Gas Transporter network. Some suppliers price these connections higher, so flag the lead digits when you compare quotes.

MPRN vs MPAN vs MSN, the three numbers people confuse

When a supplier or comparison service asks for "your number", they mean one of three things. They are not interchangeable.

Number What it identifies Where to find it When you need it
MPRN The gas supply point at your property (6 to 11 digits). On a gas bill, in your supplier app, by calling the gas transporter. Switching gas supplier, moving home, ending a deemed contract.
MPAN The electricity supply point at your property (21 digits, structured). On an electricity bill, often shown as a grid prefixed by a large "S". Switching electricity supplier or moving home.
MSN The physical meter installed at your property (the device itself). Stamped on the front of the meter, usually under a barcode. Reporting a faulty meter, booking an exchange, smart meter installs.

In short: MPRN is the address of the pipe, MPAN is the address of the wire, MSN is the serial number of the box on the wall. The box can be swapped without the MPRN changing.

The deemed contract trap, and how the MPRN saves you from it

When you move into a property with a live gas supply, you become responsible for it immediately. You did not pick the supplier and you did not sign anything, but consumption is metered against you from the hour of occupation. Under Ofgem rules, that is a deemed contract.

Two things make a deemed contract expensive:

  • the unit rate and standing charge are priced at the top of the supplier's range, often at the regulated price cap ceiling;
  • the existing supplier has no incentive to migrate you onto a cheaper fix, because every passive day is a day of premium revenue.

For scale, the Ofgem cap from 1 April to 30 June 2026 sets a typical dual fuel Direct Debit bill at £1,641 a year, with gas at 5.74 p/kWh and a standing charge of 57.21 p/day. Deemed tariffs sit near that ceiling. Switching off the deemed rate within the first month rather than the third avoids roughly two months of cap-adjacent gas pricing, which is where the round £200 figure for an average house comes from.

Find the MPRN on day one, request a quote on day two. Wait for the first quarterly bill and you have already paid for the delay.

Where to find your MPRN, fast

Four routes work. Try them in this order, because each one is faster than the next.

On a recent gas bill

A gas bill or annual statement, paper or PDF, prints the MPRN on the front page. Some suppliers label it plainly as "MPRN"; others use "Meter Point Reference Number", "M Number" or "Meter Point Number". Look for a 6 to 11 digit number that is clearly not the account number or the meter serial. A bill left by the previous occupier carries the same MPRN as yours, because it belongs to the pipe, not the customer.

In your supplier app or online account

If you have an online account or smart meter app, the MPRN sits under "Supply details", "Property details" or next to the gas usage tile. The number is read-only.

By calling your gas transporter

With no bill and no app, the gas transporter that owns the pipe in your street can read the MPRN over the phone. You need your full address and postcode. The transporter is set by your region, not your supplier:

  • Cadent covers Eastern England, North London, the North West and the West Midlands;
  • Northern Gas Networks covers the North East, Yorkshire, northern Lincolnshire and Cumbria;
  • SGN covers Scotland and southern England;
  • Wales & West Utilities covers Wales and the South West.

Via the Find My Supplier service

If you do not yet know who supplies your gas, the industry-run Find My Supplier service returns both the supplier name and the MPRN from a postcode lookup. It is the only consumer tool that maps your address to your supply point in the central register, and it is free.

Find your MPRN in under a minute

Answer three quick questions and we will tell you exactly where to look, without any guesswork.

Have you got a recent gas bill handy?

Paper, PDF, or one left behind by the previous occupier all work.

Do you have your supplier's app or an online account?

Most suppliers show the MPRN under property or supply details.

Which part of Great Britain is the property in?

Your gas transporter is set by location, not by supplier. We will give you the right one to contact.

Open your gas bill

Look at the front page or the supply summary box.

  • 1.Scan the top or bottom of page 1 for a label that reads MPRN, Meter Point Reference Number, M Number or Meter Point Number.
  • 2.You are looking for a 6 to 11 digit number, never letters, never an "S" prefix.
  • 3.If two long numbers appear, the one labelled "Account" is not your MPRN, ignore it.
Got it? Copy it down. You can now request a quote from any supplier and end a deemed contract.

Open your supplier app or online account

The MPRN is stored in the property details, not the usage screen.

  • 1.Sign in and open the menu for your address or property.
  • 2.Look for a section labelled Supply details, Property details or About your meter.
  • 3.The MPRN sits next to the gas tile, often above your meter serial number. Both are read-only.
If only an MPAN appears, you are on the electricity screen. Switch to the gas section of the app.

Still cannot find it? Call your gas transporter directly:

  • Cadent: 0345 850 5500 (customer enquiries)
  • Northern Gas Networks: 0800 040 7766 (customer care)
  • SGN: 0800 912 1700 (customer service)
  • Wales & West Utilities: 0800 912 2999 (customer service).

Phone numbers are listed for reference and may have changed; confirm the current line on the official transporter website before calling.

MPRN in Northern Ireland and Ireland

The label means something different on either side of the Irish Sea, and that mismatch is the single biggest cause of confusion for movers between markets.

In Northern Ireland, MPRN is an 11 digit electricity identifier issued by NIE Networks; it is the equivalent of the GB MPAN, not the GB gas MPRN. For gas in Northern Ireland, the right identifier is the Gas Point Reference Number (GPRN), an 8 digit number issued by the local gas network. In the Republic of Ireland, MPRN is also reserved for electricity, paired with a GPRN for gas. None of these numbers are interchangeable with the GB MPRN.

Frequently asked questions

No. The Meter Serial Number identifies the physical meter; the MPRN identifies the gas supply point. Replacing the meter does not change the MPRN.

No. The MPRN belongs to the pipe at the property, so it stays the same whichever supplier you choose.

Try the supplier app or online account first; failing that, call the gas transporter for your region (Cadent, NGN, SGN or Wales & West Utilities) or use the industry Find My Supplier service.

Those leading digits mark a supply point on an Independent Gas Transporter network. A few suppliers price IGT properties differently, so check when you compare quotes.

As briefly as possible. Deemed tariffs sit near the price cap ceiling. Once you have the MPRN you can start a switch the same day.

No. GB MPRNs only identify gas supply points in England, Scotland and Wales. In NI and the Republic, MPRN refers to electricity and gas uses a GPRN.