About Us
Practical Expertise for Safer, Better Underground Construction
At Trelayne Technical Services, we specialise in practical, results-focused consultancy for tunnels, mines and other underground works. Our strength is in combining deep materials expertise with site-based implementation — helping clients reduce risk, improve quality and optimise performance.
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We support owners, contractors, consultants and material suppliers with:
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Sprayed concrete materials, design & application
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Ground support solutions and anchoring systems
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Injection and pre-excavation grouting
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Waterproofing, water ingress control and final lining solutions
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Independent advisory, troubleshooting and optimisation
Our Approach
We believe in measurable improvement — and we help clients establish repeatable processes that drive continuous gains in production, quality and cost control.
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✔ Real world, on-site experience
✔ Evidence-based guidance and optimisation
✔ Hands-on technical support when needed
✔ Built around safety, sustainability and efficiency
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Our Values
Expertise
We know underground materials, behaviour and application.
Integrity
Independent advice driven by project success.
Innovation
Continuous improvement, data driven optimisation.
Collaboration
Working closely with your teams, as a partner.
Meet the Founder:
Nick Chittenden
Nick Chittenden has nearly four decades of experience in underground construction, sprayed concrete technology and ground support applications across the UK, Europe, Africa, the Far East and the Middle East.
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He has worked with contractors, consultants, material suppliers and international associations — always with one focus: delivering safer, more reliable and more efficient underground projects.
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Nick currently represents the Prime Sponsors on the Executive Council of the International Tunnelling and Underground Space Association (ITA) and has been involved in advancing global standards for sprayed concrete and underground construction.
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Nick is recognised for his ability to bridge the gap between design concepts and real construction conditions — turning complex technical material challenges into clear, achievable solutions that work on site.
