Jellyfish Energy named 13th fastest-growing company in the UK

Jellyfish has been named the 13th fastest-growing company in the UK by the 2026 UK Fast Growth Index.

The UK index, which identifies the 50 fastest-growing businesses in each of seven UK regions, ranked Jellyfish as not only the 13th fastest-growing in the UK, but also the top business-to-business services firm in the North of England overall. 

The company, whose ethos is built around making business energy simple through its tech-first approach, grew its turnover by 1,070% between 2023 and 2025, to £10 million.

Aidon Hudson, Chief Executive of Jellyfish Energy, said: "Being named the 13th fastest-growing company in the UK is a real milestone for Jellyfish Energy, and it belongs to our team here in Newcastle and to the businesses that have chosen to be supplied by us. 

“Small businesses want energy pricing they can understand, and they want to be rewarded for staying with their supplier, not penalised. Our growth shows how many of them were looking for exactly that. We are proud to be building a business in the North East, and our focus now is on keeping that standard of service as we continue to grow."

Throughout 2026, Jellyfish has continued to scale the business and has rolled out a ratings system for its partners and customers, rewarding the best-rated with better pricing. It also worked with global payments provider GoCardless to complete the UK’s first recurring Pay by Bank transaction, giving customers a simpler, more secure way to pay their energy bills directly from their bank account.

In his introduction to the 2026 index, Founder, Professor Dylan Jones-Evans OBE, wrote: "Behind the totals are tens of thousands of jobs, new products and services, and the hard work and risk-taking of founders and their teams. The businesses recognised this year have shown what is possible through hard work and ingenuity."

Jellyfish supplies gas and electricity to small to medium sized businesses through its own app. True to its name, it promises clear, transparent pricing, and it rewards customers who stay with exclusive deals rather than keeping its best prices for new customers.