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Project Management
Project mobilisation, delivery strategy, multidisciplinary contractor coordination, procurement interfaces, risk management, programme control and reporting for complex infrastructure projects.
Independent Project & Dispute Consultancy
Projects. Precision.
Performance.
Independent project management, programme planning, forensic delay analysis and construction dispute support, drawing on 25–30 years of experience in major UK engineering and infrastructure projects.
Specialist Capability
25–30
Years of industry experience
Senior roles include Project Manager, Head of Planning & Reporting, Planning Manager and Senior Planner across civil engineering, utilities, oil and gas, energy and construction.
What We Do
Specialist services for complex projects.
Focused support for clients, contractors, legal teams and project stakeholders requiring senior expertise and robust analysis.
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Planning & Programme Management
Baseline and integrated programme development, schedule review, critical path analysis, progress measurement, performance reporting, recovery planning and change-impact assessment.
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Forensic Programme Analysis
Structured investigation of contemporaneous records, programmes and correspondence to reconstruct events, assess cause and effect and produce clear technical findings.
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Construction Delay Analysis
Assessment of delay causation and critical path effects using appropriate methodologies, potentially including as-planned versus as-built, time-impact and windows analysis.
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Construction Dispute Support
Forensic investigations, chronology preparation, programme and contractual record review, factual witness evidence support and technical reporting for complex disputes.
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Project Controls & Recovery
Programme health checks, schedule quality assessment, earned value analysis, scenario planning, risk mitigation and practical recovery strategies.
About
Experience that connects delivery with evidence.
Effective project advice requires more than reviewing documents. It requires understanding how projects are actually planned, managed, constructed and changed.
Gareth Martin · GJM Consulting Ltd
Led by Gareth Martin, GJM Consulting Ltd draws on 25–30 years of experience across civil engineering, utilities and infrastructure, oil and gas, energy and construction.
Senior appointments have included Project Manager, Head of Planning & Reporting, Planning Manager and Senior Planner. This combination of project delivery, planning and forensic investigation informs practical, evidence-based advice.
Professional qualification: Advanced Professional Award in Expert Witness Evidence (APAEWE), a Masters-level (BTEC Level 7) qualification delivered by Legal Experience Training, the only Masters-level qualification specifically designed for expert witnesses. The training is widely recognised as a benchmark for excellence in litigation support and courtroom evidence preparation. This complements extensive experience in forensic programme analysis and construction dispute support.
Experience spans nationally significant gas infrastructure, major compressor projects, complex tunnelling, international supply chains, environmental infrastructure and high-value construction disputes.
25–30Years' experience
5Core service areas
UK& international
MajorInfrastructure projects
Major Projects & Achievements
Experience on nationally significant infrastructure.
Selected projects from Gareth Martin's professional career. Project descriptions refer to prior individual experience, not contracts necessarily undertaken by GJM Consulting Ltd.
4,963.7 mGuinness World Record
Longest hydraulically-inserted pipe
Longest hydraulically-inserted pipe
Flagship project · River Humber
River Humber Pipeline Replacement Project
A landmark high-pressure gas infrastructure scheme involving approximately 5 km of steel pipeline installed in a purpose-built tunnel around 30 metres beneath the River Humber. The project team achieved a Guinness World Record for the longest hydraulically-inserted pipe: 4,963.7 metres.
Gareth Martin's role: Planning Manager. Responsible for planning and programme management throughout the project lifecycle, from contract award and design through construction, mechanical works and commissioning.
Official certificate of participation
Recognised contribution to a world-record engineering achievement
Presented to Gareth Martin for participation in the record event for the longest hydraulically-inserted pipe, measuring 4,963.7 metres, achieved on 10 July 2020.
The certificate names National Grid Plc, Porr, Skanska and A.Hak as the organisations credited with the record. Gareth Martin served as Planning Manager on the River Humber Pipeline Replacement Project.
Recognition: participation in the record event; not an individual claim to hold the world record.
Project photography
Feeder 9 / River Humber Pipeline — project gallery
Images supplied for the Feeder 9 project feature.
River Humber — Programme Management Responsibilities
Programme Management
Responsible for all aspects of Programme Management throughout the full project lifecycle from Contract Award, through all subsequent phases through to Completion of Commissioning and Reinstatement.
Strategic planning & risk
Strategic planning, risk mitigation, what-if scenario modelling and identification of trigger points for mitigation measures.
Project controls
Earned value management (EVM), performance analysis, reporting, cost control and programme management.
Change management
Assessment of early warning notices (EWNs) and compensation event notifications (CENs), including programme implications.
Record attributed to the project team and officially credited organisations, not to GJM Consulting Ltd as a record holder. The project record title and measurement should be checked against the official Guinness World Records entry before public promotion.
Further selected project experience
Peterborough & Huntingdon Compressor Projects
Strategic gas transmission infrastructure modernisation involving multidisciplinary engineering interfaces, specialist procurement, construction planning and environmental performance improvements.
Snowdonia / Eryri Visual Impact Project
Part of the project launch team for National Grid's visual impact initiative, addressing early mobilisation, stakeholder interfaces, environmental constraints and technically challenging underground transmission infrastructure.
Lockerley Compressor Project
Management and delivery experience on a complex compressor station project, including contractor coordination, design interfaces, programme management and an international specialist equipment supply chain.
High-Value Construction Disputes
Forensic investigation, project-record analysis, event reconstruction and preparation of factual witness evidence and supporting documentation in major contractual disputes, including matters involving multi-million-pound claims.
Forensic & Dispute Support
APAEWE-qualified. Practical dispute experience.
Gareth Martin holds the Advanced Professional Award in Expert Witness Evidence (APAEWE), a Masters-level (BTEC Level 7) qualification delivered by Legal Experience Training, the only Masters-level qualification specifically designed for expert witnesses. The training is widely recognised as a benchmark for excellence in litigation support and courtroom evidence preparation. The qualification covers the duties of an independent expert, objective analysis and the preparation and presentation of expert evidence. He has significant experience in construction disputes, including preparing multiple factual witness statements that have been utilised in successful adjudications.
Support includes forensic review of project records and schedules, event chronologies, delay investigations, factual witness statement preparation and technical documentation for clients and their legal advisers.
Analysis is undertaken with an emphasis on objectivity, clear reasoning and transparent evidence. Any future independent expert appointment would require appropriate competence, independence and conflict checks, together with compliance with applicable procedural duties.
How we work
01 / DEFINE
Scope
Understand instructions, issues and available evidence.
02 / REVIEW
Investigate
Examine records, schedules and correspondence.
03 / ANALYSE
Assess
Test chronology, causation and programme effects.
04 / REPORT
Explain
Communicate reasoned, defensible findings.
Start a Conversation
Have a project, claim or dispute to discuss?
Get in touch to discuss your requirements and identify how specialist project management, planning or forensic analysis could support your objectives.
Telephone+44 (0)7817 408460
Websitegjmconsulting.co.uk
ServicesProject Management · Planning · Forensic Analysis · Delay Analysis · Dispute Support
Geographic coverageUnited Kingdom & International