Online energy comparison site U-Switch says despite a fall in profits, British Gas should be passing on savings to customers.
Anne Robinson from U-Switch says the 26 per cent fall is based on the weather and it was time the energy giant passed on the low wholesale prices to its customers.
She added it was clear "loyalty doesn't pay" and consumers could save as much as £200 a year by shopping around.
More top news
The boy was attacked on a bus in south London. Police say he was stabbed in the stomach.
With Donald Trump and Hillary Clinton looking set to become the Republican and Democrat presidential candidates, what happens next?
Everything you need to know about the most violent day of the miners' strike.