Isio saw year-on-year growth of 11 per cent according to its 2025 annual report, taking its group revenue to £188m, up 11 per cent on the 2024 figure of £170m.

Isio, which was launched six years ago and has since added more than £100m in revenue and doubled its profits, said its five-year compound annual growth (CAGR) had risen by 21 per cent since 2020.

It now employs more than 1,400 people across the UK.

Commenting on its growth since launch, Isio chief executive, Andrew Coles, said: “We have built a business of real scale, resilience and ambition since launching in 2020.

"These results reflect the strength of our client relationships, the quality of our advice and the commitment of our people across the firm.”

He added: “We have continued to grow our core pensions and investment advisory capabilities, strengthened our endgame expertise and expanded our wealth and employee benefits propositions to support long-term diversification.

"With strong foundations in place and the support of Aquiline, we are well-positioned to continue expanding our capabilities and delivering long-term value for clients in the years ahead.”

Private investment firm Aquiline secured a majority share in Isio in 2024, increasing its weight in the field; the firm had already invested in Smart Pension, Wealth at Work, and Landytech.

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