https://www.energyplus.co.uk/guidesfaqs/prepayment-meter-tariff-rates-uk-this-month
Prepayment meter tariff rates UK this month
This month's UK prepayment (PAYG) energy rates explained: unit rates, standing charges, regional differences, pitfalls and how to compare tariffs.
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https://www.citizensadvice.org.uk/wales/consumer/energy/energy-supply/problems-with-your-energy-supply/problems-getting-to-or-topping-up-your-prepayment-meter/
Problems getting to or topping up your prepayment meter - Citizens Advice
What you can do if you can't get to your prepayment meter, can't top it up, or can't use it
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