Led By

Christos Botsialas

Ground Engineering Specialist — 29 years across the UK, Greece & New Zealand.

Christos Botsialas, Founder & Director of CGB Geo Ltd
  • Chartered Engineer (CEng), IOM3
  • Chartered Geologist (CGeol), Geological Society of London
  • RoGEP Specialist, Institution of Civil Engineers (ICE)
  • MSc Engineering Geology, University of Leeds
  • BSc Geology, National & Kapodistrian University of Athens
  • MBA, University of Economics & Business, Athens
Engineering Council - Chartered Engineer
Institute of Materials, Minerals & Mining - Member
The Geological Society - Chartered Geologist (CGeol)
RoGEP - Register of Ground Engineering Professionals

Publications

  • Industry steering group member on behalf of AGS in the guide "Piling and Penetrative Ground Improvement Methods on Land Affected by Contamination: Guidance on Pollution Prevention", March 2025, CL:AIRE
  • Author of the AGS Bitesize Guide "EC7 Next Generation 10 – Slopes, Cutting, and Embankments", November 2024
  • Co-author of ground investigation, geotechnical assessment and design specification for railway infrastructure projects on behalf of Greece's National Railway Organisation, 2002–2011
  • "Flysch Nappe of North Pindos as Geological Environment for the Design and Construction of Underground Works", technical paper presented at the 4th Hellenic Conference of Geoenvironmental Engineering, proceedings vol. I, pp.73–80, Athens, Greece, 2001
  • "Anthochori Tunnel – Geological & Geotechnical Investigation", technical paper presented at Egnatia Odos SA, Ioannina, Greece, 1999

Ground Engineering Specialist

29 years · UK, Greece & New Zealand

With over 29 years of experience, Christos has consistently delivered geotechnical engineering solutions that comply with regulatory standards and best practice — addressing complex hazards including shrink/swell clays, mining risk, natural cavities, compressible soils, running sands, high groundwater tables and slope instability across bridges, tunnels, embankments, cut slopes and buildings.

His expertise spans ground investigation and assessment, ground movement and subsidence evaluations, slope stability analysis and remediation, audit services, and the supervision and monitoring of specialist geotechnical works — across private and public sector clients in the UK, Greece and New Zealand.

Christos believes every site is unique, requiring a bespoke approach that integrates the site-specific ground model, precise design requirements and the client's development objectives.

2026 — Today
Founder & Director
CGB Geo Ltd
2021 — 2026
Technical Director — Ground Engineering
TRC, London, UK
2018 — 2021
Associate Geotechnical Engineer / Team Leader
Campbell Reith Hill LLP, London, UK
2015 — 2018
Principal Geotechnical Engineer
Southern Testing Laboratories Ltd, East Grinstead, UK
2013 — 2015
Senior Geotechnical Engineer / Team Leader
Soil & Rock Consultants, Auckland, New Zealand
2002 — 2013
Senior Manager of Geotechnical Investigation and Design Contracts
Ergose SA (National Railways), Athens, Greece
1997 — 2000
Engineering Geologist (Freelance)
Greece

Awards & recognition

  • Finalist, GE Awards 2024 — Consultancy Firm of the Year (TRC)
  • 2015 Hynds Construction Award — Pinesong Retirement Village slope stabilisation, Auckland NZ
  • The High Point Rendel Prize, University of Leeds

Contribution to the Industry

  • Judge in the Ground Engineering (GE) Awards (2025, 2026)
  • ICE RoGEP Assessor for new applicants
  • Member of the Geotechnical Working Group of the Association of Geotechnical and Geoenvironmental Specialists (AGS)
  • Member of the Editorial Board of the AGS Magazine in the UK
  • Mentor for several CGeol and RoGEP applicants