The screen of a pre payment electricity meter on the outside of a house in Caerau, Cardiff, shows £3.80 per week standing charge on the meter, which is charged whether or not any electricity is... © Natasha Hirst/shotbywomen

A Paypoint sign over shop that provides a service to top up electricity and gas card for prepayment meters. Credit: Natasha Hirst / shotbywomen © Natasha Hirst/shotbywomen

A pre payment gas smart meter outside a house in Caerau, Cardiff, with the screen showing a standing charge of £0.375 per day and price of £0.10645/kWh on the menu. 3rd february 2023 Credi... © Natasha Hirst/shotbywomen

A local shopkeeper with a pay point service adds money to a pre payment gas card in Ely, Cardiff. 3rd February 2023 Credit: Natasha Hirst / shotbywomen © Natasha Hirst/shotbywomen