DC Advisory advises Sullivan Street Partners on the sale of Octavius Infrastructure to RSK Group

Background

  • Octavius Infrastructure Limited (Octavius) is one of the UK’s leading civil engineering and electrification transport infrastructure businesses, with over 700 employees working across rail and highways
  • Headquartered in Surrey, UK, Octavius is a Tier 1 supplier with longstanding relationships in the transport sector with key customers, such as Network Rail, National Highways, numerous Local Authorities, and  Transport for London
  • Octavius was acquired by Sullivan Street Partners (SSP), a UK-based mid-market buyout specialist, in 2021. Under SSP’s ownership, Octavius has expanded its capabilities, reputation, revenue, and profitability
  • RSK Group (RSK) is a global leader in the delivery of environmental and engineering solutions

Process

  • DC Advisory was exclusively engaged by the shareholders of Octavius to provide sell-side M&A and Debt Advisory services
  • DC Advisory was selected due to its extensive experience, deep sector knowledge, and strategic insights into the infrastructure services sector
  • DC Advisory ran a tailored process, leveraging its sector expertise to identify and engage a competitive bidder group across private equity and strategic investors who could support Octavius’ next growth phase
  • DC Advisory also coordinated a lender education process, providing financial investors with a range of attractive financing packages 

Outcome

  • Following a competitive process, RSK acquired Octavius from SSP in November 2025
  • Octavius will continue to focus on sustainable growth, delivered with a commitment to the safety, health and well-being of their people and the environment
  • Infrastructure is one of RSK’s core strategic growth markets, and the acquisition of Octavius provides a well-established business, with a proven track record in safety-critical infrastructure delivery, to RSK’s portfolio
  • This transaction further demonstrates DC Advisory’s significant experience in the infrastructure services sector

“We engaged DC Advisory for this transaction given their strong track record, sector expertise and their deep understanding of the investor landscape. They provided outstanding strategic advice to drive a highly competitive process and deliver an excellent result.”

Layton Tamberlin, Managing Partner, Sullivan Street Partners

“The DC Advisory team have been a privilege to work with throughout: professional, hard-working, driven, and capable – they were relentless advocates of our team, always available and highly collaborative. They really understood our business and were able to help us articulate to potential purchasers what makes Octavius special.”

John Dowsett, CEO, Octavius Infrastructure

“It has been a pleasure to advise Octavius and Sullivan Street Partners on this transaction. Octavius is a fantastic business, operating in a sector underpinned by long-term structural tailwinds. We look forward to seeing John and his outstanding team continue their journey and strong growth trajectory as part of RSK.”

Gary Hancock, Managing Director, DC Advisory

“John and the management team of Octavius have built an exceptional business, distinguished by its strong culture, unrivalled reputation and market-leading capabilities. It has been a pleasure working with the Octavius and Sullivan Street teams to achieve this outstanding outcome.”

Michael Penny, Vice President, DC Advisory

 

Date
Sectors
  • Industrials
Deal type
  • M&A Advisory
  • Debt Advisory & Restructuring
Deal locations
United Kingdom
Deal team
Managing Director
Managing Director
Managing Director
Vice President
UN SDG Activity
  • GOAL 9: Industry, Innovation and Infrastructure
  • GOAL 11: Sustainable Cities and Communities

Disclaimer

For more information, please see our transaction disclaimer

For important information regarding testimonials, please see our disclaimer.

Contact form

Thank you!

Your message has been received by DC Advisory so you'll hear back from us soon.

We collect your personal data if you sign up to receive news or get in touch with us. This is collected by third-party firms on our behalf. We have three separate lists:

  1. DealCloud - which we use as our CRM. DealCloud privacy statement is available here: https://www.intapp.com/privacy/
  2. SalesForce - which we use as our CRM. SalesForce privacy statement is available here: https://www.salesforce.com/uk/company/privacy/
  3. Spotler - which we use to send email marketing campaigns. Spotler privacy statement is available here: https://spotler.co.uk/privacy-policy/

Application form

Application documents*
(Maximum file size of 10 MB. File types accepted: pdf or doc)
* Compulsory fields

Thank you!

Your message has been received by DC Advisory so you'll hear back from us soon.

Back to top