Households in Yorkshire have proved to be the savviest energy consumers in Britain during the recent spate of energy tariff hikes, while those in central London were less likely to shop around.
According to a year-long study of energy switching, Leeds North West saw the biggest energy switching boom with almost a quarter of households choosing a better deal.
Also in the top ten were Leeds North East, Leeds East and Leeds Central with 21pc of bill payers switching to a new energy tariff.
The figures have emerged as government ministers prepare to legislate a controversial market-wide cap on standard energy tariffs after campaign pledges from most major parties called for an end to “rip-off energy tariffs”.
But the data shows the lowest proportion of energy switchers live within miles of where the legislation is taking place.
In the well-heeled Cities of London and Westminster only 8pc of bill-payers chose to switch to a new supplier over the same period, which included hefty price hikes from all major suppliers.
The rate is even less than in the ultra-wealthy borough of Kensington where 11pc shopped around for a better energy deal.
Others slow to take advantage of a surge in new energy suppliers to the market are mostly in Scottish constituencies with only between 5pc and 10pc of households leaving their supplier in the last year.
The report, provided to Energy UK by data service company Electralink, did not offer an explanation for why Londoners are less likely to switch than those outside the city, but the higher number of renters is likely to have impacted the results.
Similarly, Scotland is likely to have a higher proportion of homes using pre-pay meters meaning customers may find it more difficult to switch but will be helped by a tariff cap designed specifically for pre-pay customers.
The lower switching rate in Scotland and central London dragged the national average to around 15pc for the last year.