Independent Corrosion & Cathodic Protection Design UK Consultancy
SegCorr Ltd is an independent UK-based consultancy specialising in cathodic protection design, corrosion management, and life-extension strategies for reinforced concrete and metallic infrastructure.
Founded and led by John Paul Segers, a Chartered Engineer and one of the few UK practitioners certified to BS EN ISO 15257 Level 5 — Cathodic Protection Expert for Reinforced Concrete Structures, SegCorr delivers authoritative, expert-led services to asset owners, engineers, contractors, and legal teams across the UK and internationally.
WHY WE EXIST
Our Mission — Extending Infrastructure Life Through Corrosion Control
Corrosion management technology has a direct and positive impact on the world — reducing consumption of non-renewable natural resources, extending the service life of the built environment, and maximising the recovery and recycling of materials at end of life.
At SegCorr, our mission is to educate, innovate, and share knowledge across the corrosion management industry — promoting sustainable, whole-life approaches that deliver lasting economic and environmental benefits.
Our work is built on five core principles: research, development, implementation, technical advancement, and knowledge sharing — applied to every project, publication, and training programme we deliver.
Meet John Paul Segers — Principal Corrosion & Cathodic Protection Consultant
MSc · CEng · FICorr · FIMMM · BS EN ISO 15257 Level 5 CP Expert
John Paul Segers is the founder and Principal Consultant of SegCorr Ltd, with 29 years of international experience in corrosion control, cathodic protection design, and infrastructure life-extension engineering.
He is a Chartered Engineer (CEng), a Fellow of the Institute of Corrosion (FICorr), a Fellow of the Institute of Materials, Minerals and Mining (FIMMM), and holds a Master’s degree in Corrosion Control Engineering.
John Paul is one of a small number of UK practitioners certified to BS EN ISO 15257 Level 5 — Cathodic Protection Expert for Reinforced Concrete Structures, the highest competence level defined in the international standard. He also holds BS EN ISO 15257 Level 4 Specialist status across all other CP sectors, and is a NACE/AMPP Certified Corrosion Specialist and Certified Cathodic Protection Specialist (CP4).
His technical expertise covers cathodic protection design, corrosion prevention and control, deterioration and failure investigation, whole-life planning, and infrastructure life-extension strategy. He is also provides independent CPD-accredited online CP and corrosion training, in-person industrial presentations, and university teaching.
Certifications & Professional Memberships
The Value of Level 5 Expertise for Your Asset
Contribution to Standards and Practice
While both certification levels execute complex projects, engaging a BS EN ISO 15257 Level 5 Expert brings a strategic layer of quality assurance. We do not just follow the codes—we help author and shape them.
Standardisation Leadership: Active member of the British Standards Institution (BSI) subcommittee GEL/603 since 2007, contributing directly to the review and development of national, European, and international cathodic protection standards.
Code Authorship & Revision: Contributor to the technical revision of critical highway and concrete infrastructure documents, including National Highways standards (CS 462, CC 484, CD 370) and Concrete Society Technical Report 73 (TR73).
Unmatched Sector Breadth: Certified across all application sectors at Level 4 since 2013, with Level 5 Expert status in Reinforced Concrete Structures awarded in 2026, reflecting the exact cross-sector discipline advancement required by international standard BS EN ISO 15257.
Areas of Technical Expertise
Infrastructure Sectors We Serve
TEACHING, RESEARCH & INDUSTRY CONTRIBUTION
Knowledge Sharing & Industry Contribution
Beyond consultancy, John Paul is actively involved in advancing the corrosion management profession. He has contributed to the development of cathodic protection education and practice through teaching, examination and standardisation work — including as a former tutor and examiner on the Institute of Corrosion’s BS EN ISO 15257 CP courses, where he delivered 194 teaching days to more than 430 professionals and facilitated 30 days of technical examinations.
He has been a Visiting Lecturer in civil engineering at the University of Leeds since 2010 and the University of Birmingham since 2011, structuring and delivering lectures on infrastructure durability, and he speaks regularly at industry events. Independently of this, SegCorr develops and delivers its own CPD-accredited online cathodic protection and corrosion training.
His commitment to knowledge-sharing reflects a core belief that a better-educated industry produces better-protected infrastructure — reducing waste, extending asset life, and delivering measurable sustainability benefits.
SUSTAINABILITY & THE BIGGER PICTURE
Corrosion Management for a Sustainable Built Environment
Effective corrosion management has a direct and positive impact on global sustainability. By extending the service life of existing infrastructure, it reduces the demand for non-renewable natural resources, cuts embodied carbon, and maximises the recovery and recycling of materials at end of life.
SegCorr’s work supports asset owners in achieving these goals — delivering technical solutions that make economic and environmental sense over the whole life of a structure.
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Ready to Discuss Your Project?
Whether you need cathodic protection design, an independent third-party review, expert witness support, or specialist training — SegCorr provides expert-led, independent consultancy backed by BS EN ISO 15257 Level 5 competence.