Npower have announced rises for their standard variable tariffs of 15% for electricity and 4.8% for gas. I should imagine many of the others will follow suit.
You may want to take 30 mins on a comparison site, to switch to a cheaper fixed tariff and save yourself possibly hundreds of pounds. (I did mine in December)
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https://www.uswitch.com/gas-electricity/guides/prepayment-meters/
I appreciate that there are people who cant use the internet, but surely most of them will know someone who can do it for them.