The exact date millions of energy customers must take a meter reading before their bills rise has been revealed. As we head beyond Christmas, British Gas, OVO, EDF, E ON Next, and Octopus customers must take a meter reading to ensure bills are accurate.

You should try and take a meter reading as close to January 1 as possible to show how much energy you have used up until this point. British Gas customers have until January 14 to send in a reading online, via its app, telephone line or web form.

Ovo will let customers send in your reading in your online account, via its app or over the phone and you need to do so by January 11. E.on Next customers must submit a meter reading before January 6 through their online account, via the app, email or by telephone.

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Octopus Energy customers have until January 8 to submit their reading online, through a web form, via the app or by email. And EDF customers need to send in a reading before January 10, the energy supplier has also explained ahead of the new cap.

BBC and ITV star Martin Lewis explained previously: "Pay by monthly Direct Debit? It's Meter Reading Week. If you've a WORKING smart meter, you don't need to do anything. If not, try to give an up-to-date meter reading within a few days either side of the rate change to reduce the risk your supplier estimates you've used more at the current higher rate than you have.

"For extra peace of mind, email yourself a time-stamped pic of the meter." MSE added: "See our firm-by-firm when to do a reading. It's also a key moment to use our 'Is your Direct Debit right?' calc. If it's out of kilter, ask 'em why and read how to challenge unfair Direct Debits."