Mainmark UK Welcomes First Director to Steer Growth Strategy

Image credit: Mainmark UK

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Press Release

February 13th 2026

Continuing growth and innovation, Mainmark UK has announced the appointment of Steve Killeen as its first Non-Executive Director.

Mainmark Ground Engineering (UK) Ltd, established in 2016, is a subsidiary of the global Mainmark group – headquartered in Sydney, Australia, which has successfully grown its global presence over the last 20 years and now has 18 office locations worldwide.

Serving the residential, industrial, commercial, civil engineering, mining and heritage sectors, Mainmark UK provides effective solutions for diverse ground engineering problems.

Using innovative solutions to raise, re-level and re-support buildings that have been affected by subsidence, Mainmark has a global presence and has completed more than 80,000 successful projects worldwide.

Steve joins the UK arm of Mainmark with over 40 years of industry experience across infrastructure, engineering and industrial sectors in the UK, Australia and international markets.

His extensive expertise in strategy and executive leadership and strong track record of building high-performance organisations will reinforce Mainmark’s ambitious growth targets in these areas. Steve’s knowledge will enhance the company’s technological capabilities, support continued expansion, and support innovation.

Steve comments: “Mainmark is a company that stands out with its distinctive products, proven expertise, and talented team. Its combination of practical solutions and global reach made me eager to join the team.

My focus will be on supporting the team to drive the next stage of Mainmark UK’s development and maximising the potential of current operations. There’s strong momentum in the business, and with clear priorities, we can achieve sustainable growth while continuing to deliver outstanding results for our customers.”

Before joining Mainmark, Steve was the CEO of the infrastructure and engineering services company, Downer, in New Zealand, having progressed through multiple roles with the company since 2005. Prior to joining Downer he was a Director at British consultancy Atkins, leading initiatives to improve team performance and meet customer needs.

Mainmark UK’s General Manager, Tom Kavanagh comments: “It’s an exciting time at Mainmark, following our recent expansion into Ireland. Our focus is on strengthening our services and delivering innovative solutions. Steve’s appointment marks an important milestone in this journey, building on our already solid foundation of expertise.

“With a track record of being involved with major organisations to oversee critical infrastructure delivery and operations, Steve brings a passion for driving industry improvement, fostering collaboration, and championing innovation. His knowledge and leadership will be instrumental as we enter an exciting phase of growth, helping to shape the future of the business and ensure we continue delivering outstanding results for our customers.”

Mainmark is internationally recognised for solving complex ground engineering challenges across residential, commercial, civil, industrial and heritage sectors. The firm’s services address issues such as substructural movement, subsidence-related cracking and relevelling with tailored solutions and technologies.

By combining deep industry knowledge with commitment to sustainability and innovation, Mainmark continues to redefine standards in foundation underpinning and soil stabilisation worldwide.

Notes to editors

Notes to Editors: About Mainmark Mainmark Ground Engineering (UK) Ltd is a subsidiary of the Mainmark group of companies originally established in 1989, with its headquarters located in Milton Keynes. Mainmark group of companies has a global footprint across 14 locations with more than 200 staff worldwide. For over three decades, Mainmark has established itself as a pioneering force in the industry, leading the way in developing and delivering cutting-edge ground improvement solutions. With an impressive track record of over 80,000 successful projects across Australia, New Zealand, Japan, Europe and the UK, Mainmark has earned international recognition as an award-winning and leading ground engineer. Mainmark provides effective solutions to many types of ground engineering problems in a wide range of sectors such as residential, industrial, commercial, civil engineering and mining as well as heritage buildings using innovative solutions to raise, re-level and re-support buildings that have been affected by subsidence. No single method can provide the solution to every ground engineering problem, so Mainmark developed its own state-of-the-art proprietary technologies. These include JOG Computer-Controlled Grouting which has been proven for raising large complex structures as well as Teretek® engineered resin injection solution, utilising proprietary deep-lift and void-fill methodologies. The deep-lift method is unique in that it both raises, re-levels and re-supports structures, and increases ground bearing capacity in the one process.

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