RSK Group, a specialist in environmental and engineering solutions, has reported a 21% rise in revenue to £2.2 billion for the year ended 6 April 2025.
Net fee income of £1.1 billion represents a 13% increase, while EBITDA of £122.4 million is up 3%. £176.8 million cash at bank is 34% higher than the previous year.
RSK founder and CEO Alan Ryder said, “Throughout the year, we witnessed some changing rhetoric around the global sustainability agenda, particularly in the United States. Pleasingly, this has not impacted market demand in the regions where we operate and, in contrast, opportunities continue to increase at pace.”
RSK interim chief financial officer Frank Herlihy added, “RSK continues to invest heavily in business growth, both organically and through acquisitions, to deliver long-term value creation. This has been essential as we further enhance the group’s capabilities, expand its geographic footprint and position RSK as a global leader. The benefits of this investment-led approach – including future revenue growth, operational synergies and improved margin performance – will be realised in the medium to long term.”
RSK added that it remains focused on four core market sectors that are ‘most critical to a more sustainable future’.
Frank Herlihy commented, “Diversification across end markets has long been a strength of RSK, and our 2025 results help to showcase our leadership position in these markets. Water, which accounted for 43% of the revenue generated in the period, increased 25% year-on-year. Energy and the built and natural environment sectors each accounted for 21% of the total revenue generated and also performed well, growing at 9% and 14%, respectively. Representing 14% of total revenue for the group, infrastructure was our fastest growing segment in the year, with 36% growth over the previous period.”
The group completed 11 acquisitions during the year, strengthening its offering in the UK, Australia, and Africa.
Alan Ryder said that, looking ahead, the board is excited about the opportunities for RSK. “We are targeting continued growth, both in revenue and EBITDA, as we seek to capitalise on the strong market conditions and drive revenue synergies across the group. Alongside this, RSK plans to continue to execute its acquisition strategy, bringing specialised businesses into the group to further develop our end-to-end sustainable solutions offering in the core markets of water, energy, infrastructure and the built and natural environment.”
The full RSK Annual Report can be found here. RSK has also published the group’s FY25 Sustainability Report, which can be read here.
