The average gas and electricity bill will increase by £221, reflecting the spike in global prices caused by the Iran war. Photograph: Simon Dack/Alamy
Millions of Britons could pay higher energy bills than they need to if they do not submit a meter reading before the price cap rises on Wednesday.
The estimated 5.3 million households on standard tariffs who do not have a smart meter have been urged to take action before the new unit rates for gas and electricity take effect.
