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Business Details
50+ Years
experience
Trusted Construction Contractors in Porthmadog
Established in 1972, Colin Jones Rock Engineering has built a reputation as a respected specialist in geotechnical and civil engineering. Our expertise spans rock face stabilisation, landslide repairs, retaining wall construction, and marine works, delivered with a commitment to safety and quality. With over 50 years of experience, we combine traditional craftsmanship with modern techniques to tackle complex projects across the UK. Our accredited team holds industry-recognised certifications, including CSCS, CPCS, and IRATA qualifications, ensuring compliance with the highest standards.

We collaborate with local and national suppliers to meet client needs efficiently while maintaining a focus on innovation and reliability. Our bilingual workforce supports seamless communication, and our leadership team brings decades of hands-on experience in project management and technical execution.
Services
Geotechnical Engineering Landslide Repairs Rock Face Stabilisation Civil Engineering Bridge Work Retaining Wall Construction Marine Works Grouting Gabions Installation Difficult Access Solutions
Details
  • Year established: 1972
Highlights and features
  • We offer 50+ years of specialist geotechnical engineering experience
  • Our team holds IRATA qualifications for challenging access projects
  • Accredited with industry-recognised safety and technical certifications
  • Bilingual workforce supporting local and national operations
  • Proven track record with public sector and major construction clients
Associations and certifications
  • CSCS
  • CPCS
  • NPORS
  • IRATA
  • NEBOSH
What people say
Brilliant workforce Respectful and considerate Highly recommend Wonderful work Extremely friendly
Services
Geotechnical Engineering
Specialist geotechnical solutions including slope stabilisation and rock face engineering. Our team installs rock anchors, soil nails, and catch fences to prevent landslides and erosion. With decades of experience, we deliver tailored interventions for challenging terrain across the UK.
Landslide Repairs
Comprehensive landslide repair services addressing both immediate safety concerns and long-term stability. We employ techniques like grouting, drainage solutions, and structural reinforcements to restore affected areas to safe working conditions.
Civil Engineering
Full-spectrum civil engineering capabilities covering bridge maintenance, retaining wall construction, and marine projects. Our expertise extends to innovative solutions like GRP soil nail installations for coastal defences and urban infrastructure upgrades.
Difficult Access Solutions
Specialist access techniques for complex locations using rope access and mechanical systems. Our IRATA-certified technicians safely execute projects in hard-to-reach areas, minimising environmental impact while maintaining operational efficiency.
Gabions Installation
Design and installation of gabion structures for erosion prevention and slope stabilisation. We supply and construct wire mesh baskets filled with durable stone to create flexible, permeable retaining systems for civil engineering projects.
People
David Jones
Director
With 50 years in the industry, David transitioned from trainee driller to Managing Director. He oversees operations and shares technical expertise gained across all project phases, maintaining active involvement despite semi-retirement.
Richard W Owen
General Manager
Former quantity surveyor with 20 years' contract experience. Manages commercial operations, project coordination, and health & safety documentation. Progressed from Commercial Manager to General Manager over eight years with the company.
Darren Moore
Contracts Manager
35-year veteran starting as a driller, now managing projects from initial surveys to completion. Specialises in geotechnical works, soil nailing, and client liaison. Provides on-site technical guidance to project teams nationwide.
Questions
What specialist engineering services do you offer?
We provide geotechnical engineering, rock slope stabilisation, landslide repairs, bridge work, retaining walls, marine projects, and difficult access solutions using industry-leading techniques.
How long has your company been operating?
Colin Jones (Rock Engineering) has delivered specialist construction services since 1972, with over 50 years of combined experience in our management team.
Which areas do you cover?
Based in Porthmadog, North Wales, we operate across the UK including major infrastructure projects in urban and remote locations.
What safety accreditations do your teams hold?
Our site teams hold CSCS, CPCS, and NPORS certifications. We have IRATA-qualified technicians for rope access and NEBOSH-certified health & safety specialists.