Energy prices rise again on October 1st and while the government’s new price guarantee has limited that to some extent they will still be going up by over 25% for most people (unless you are on a fixed tarrif)

So, it is a good idea to give your energy company meter readings to make sure you are only being billed for what you use. If you can send in a reading for on or around 30th September this means your usage will be accurately recorded at the point of the price increase and should hopefully avoid disputes later on.

You don’t necessarily have to submit your reading on this day, most energy companies will let you send in a backdated reading for a few days after. When the prices went up in April many energy companies websites and phone lines crashed because of the volume of people trying to use them so a day or so after might be better.

https://www.citizensadvice.org.uk/…/how-to-read-your…/

If you have a smart meter, and it is working, you don’t need to send readings in.