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Gas bills: Faulty meters overcharge 1.5m gas customers

More than one million pre-payment gas customers have been overcharged because their meters are faulty, the industry body Energy UK has admitted.

About 1.5 million meters have not been working properly since they were installed, some as long ago as 2007.

Energy UK said customers may have been overcharged by as much as 25p for each top-up.

The BBC's Andy Verity explains how the issue was first discovered.

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