Your Meter Point Reference Number (MPRN) is a unique 11 digit number assigned to every single Gas connection and meter in the country. (Some MPRNs are less thatn 11 digits)
Each property in the UK that has a mains gas supply has an MPRN and in some circumstances more than one MPRN.
The MPRN is unique to the property and does not change if you change supplier or even if you move. Sometimes the MPRN is referred to as a M Number or Meter Point Reference Number
If you want to find your MPRN it hould be printed on a recent gas bill.
Make sure that you do not confuse the MPRN with the Meter Serial Number
If the MPRN starts with 74 or 75 then you should be aware that gas is piped to your property by an Independent Gas Transporter (IGT).
This may have an adverse effect on the price you pay for gas as some gas suppliers charge a premium rate to customers served by an Independent Gas Transporter.
If your MPRN is not printed on a recent gas bill or if you have just moved into new premises and do not yet have a gas bill, you can find out your MPRN by calling Transco's MPRN helpline on 0121 713 4901 (Transco can only provide details of MPRNs ehich do not belong to Independent Gas Transporters)