What is an MPAN / MPRN number?

What is an MPAN?

An MPAN (Metering Point Administration Number) relates to electricity supply only.
It is also known as the "supply number" or "M number" and can be found on any of your recent electricity bills in a similar format shown below:

 
The format of an MPAN is standard. The S always appears (so it won't ever be another letter) The top row of numbers is always made up of 8 digits separated in the format shown. The bottom row is always made up of 13 digits, separated in the format shown.

What is an MPRN?

An MPRN (Meter Point Reference Number) relates to gas supply only. It is usually in small print at the bottom of your gas bill.

It is also known as the "supply number" or "M number" and can be found on any of your recent gas bills in a similar format shown below:

 
The format of an MPRN is standard and consists of between 6 and 10 numerical digits only.

NB: Your MPRN should not be confused with your gas supplier account number or the meter serial number printed on the meter itself. Some very recent gas meter installations have the MPRN clearly identified on the meter itself although this practice is rare.
If your MPRN is not printed on a recent gas bill or if have just moved into your home and do not yet have a gas bill or an old gas bill, please call National Grid on 0870 608 1524 and they will be able to tell you your MPRN.