Sheffield-based Nabuh, which has 36,000 customers and about 70 employees, will become part of British Gas at the end of April.

British Gas said that Nabuh Energy will provide its customers with more information, but gas and electricity supplies will continue without interruption and prices and terms will remain the same.

Nabuh Energy will be in touch with customers with more information in the coming days. Customers are unlikely to notice any significant changes. Nabuh online accounts will still work as normal and if you are on a prepayment tariff, you’ll be able to top up your card in the usual way.

Chris O’Shea, group chief executive at Centrica, said: “We are delighted to welcome both Nabuh Energy’s customers and our new colleagues. This deal is part of our strategy to focus on and invest in our core markets and follows the acquisition of Robin Hood Energy’s customer base last year and more recently Simplicity Energy.

“This is a really exciting time for British Gas as we seek to return the business to growth and put customers at the heart of everything we do, by offering a competitive and innovative service.”

Ofgem threatened to revoke Nabuh Energy’s license in 2019 after the firm failed to pay £872,200 plus interest in Renewables Obligations. It made a similar threat in October 2020 by which time Nabuh owed £2,683,631.70, plus accrued interest, in Renewables Obligations.