Ofgem appoints British Gas to take on customers of Tomato Energy

Ofgem has appointed British Gas to take on supplying Tomato Energy's 15,000 domestic customers, and 8,000 non-domestic customers. This follows a competitive process run by Ofgem to get the best deal possible for customers.  

Funds that current and former domestic customers of the supplier have paid into their accounts will be protected, where they are in credit. Domestic customers will also be protected by the energy price cap with their new supplier.   

For existing Tomato Energy customers, energy supplies will continue as normal after they were switched over to British Gas on Sunday 9 November 2025.   

Customers of Tomato Energy will be contacted over the coming days about the changes. If customers wish to switch supplier, they can shop around but are advised to wait until the transfer has been completed. Customers will not be charged exit fees if they decide to switch to another supplier.  

Rohan Churm, Director for Financial Resilience and Controls, said: 

“Minimising the disruption to customers is our top priority when a supplier exits the market, so I am pleased to confirm British Gas has been appointed to take on customers of Tomato Energy, and will work to move their accounts in the coming days and weeks.  

“While I know customers may be concerned, they do not need to worry – any domestic credit balances are protected and there will be no interruption to their supply during this period.” 

“Tomato Energy customers will be placed onto a competitive tariff, and when the switch is complete they can consider what’s right for them and can shop around for other deals. They will also face no exit fees if they choose to switch to another supplier.”    

Notes to editors  

• Tomato Energy customers are being supplied by British Gas as of Sunday 9 November 2025. Accounts will be fully set up in due course. British Gas will be in touch with customers in the coming days with information on setting up their accounts.  
• British Gas has been appointed to take over the former customers of Tomato Energy under Ofgem's Supplier of Last Resort process. Any questions Tomato Energy customers have should be directed to British Gas.
• Funds that current and former domestic customers of Tomato Energy have paid into their accounts will be protected, where they are in credit.  
• Current and former customers who owe money, or are in debit to Tomato Energy, should wait to hear from British Gas or their outgoing supplier’s administrators.  
• Ofgem’s announcement on Tomato Energy can be found here: Ofgem protects customers of Tomato Energy.
• Customers can find support and advice on the Ofgem website, Facebook and X (formerly known as Twitter) feed, @ofgem. Alternatively, if they need extra help, in England and Wales they can contact Citizens Advice on 0808 223 1133 or email them via webform, in Scotland they can contact Advice Direct Scotland on 0808 196 8660 or use their online webchat.  
• More information for Tomato Energy customers can be found on the Ofgem website.