RSK Group Limited has released its annual report and consolidated financial statements for the period from 1 April 2024 to 6 April 2025, showing another year of sustained financial growth across its global operations.
The company reported revenue of £2.2 billion, an increase of 21% year-on-year, and net fee income of £1.1 billion, up 13%. EBITDA reached £122.4 million, a 3% rise on the previous year, while cash generated from operations totalled £105.8 million – up 12%, representing an 86% free-cash-flow conversion rate. Cash at bank increased by 34% to £176.8 million.
Founder and Chief Executive Officer Alan Ryder said that RSK’s success reflects its positive global impact and commitment to sustainable development.
RSK Group Founder and CEO Alan Ryder
RSK is delivering a profoundly positive impact in the world and, in a time when the need for sustainable change has never been greater, it’s imperative that we continue to develop solutions to transform our world, said Alan.
Despite global uncertainty around the sustainability agenda, particularly in the United States, Ryder noted that market demand across RSK’s operating regions remains strong and continues to grow.
Interim Chief Financial Officer Frank Herlihy added that the company’s financial performance demonstrates resilience and focus:
RSK Interim Chief Financial Officer Frank Herlihy
RSK continues to invest heavily in business growth, both organically and through acquisitions, to deliver long-term value creation. This investment-led approach strengthens our capabilities, expands our geographic footprint and positions RSK as a global leader.
Over the past five years, RSK has increased its annual revenue from £275 million in 2020 to more than £2 billion, achieving a compound annual growth rate of 52%.
Strong Performance Across Core Markets
RSK focuses on four core markets critical to a sustainable future – water, energy, infrastructure, and the built and natural environment. In FY25, the water sector accounted for 43% of total revenue, growing by 25% year-on-year. Energy and environment-related sectors each contributed 21% and grew by 9% and 14% respectively, while infrastructure was the fastest-growing segment with a 36% rise over the previous period.
Growth Driven by Collaboration and Acquisition
Ryder highlighted the company’s “lily pad” model, which brings together RSK’s 200 specialist businesses to encourage collaboration, vertical integration and cross-selling:
Our businesses are recognised leaders in their respective fields. When multiple ‘lily pads’ come together and overlap, they generate added value for our clients and our people, he said.
During the financial year, RSK completed 11 acquisitions across the UK, Australia and Africa, welcoming new companies including eb7, Apollo Strategic Communications, 3BM Group, Kendall Kingscott, Edge Impact, Pegasys, N-Able Group and Elsym Installations.
