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Memberships
Accreditations
ISO 45001:2018 - The provision of civil engineering and construction services SSIP:- Principal Contractor
ISO 14001:2015 - The provision of civil engineering and construction services
ISO 9001:2015 - The laying of asphalt mixes, machine and hand laying
ISO 50001:2018 - The provision of civil engineering and construction services
BSG Certificate of Excellence
Cyber Essentials Certificate of Assurance
CIRAS Certificate
RISQS Certificate
Once For All Health Safety
Mates In Mind Membership Certificate
Constructionline Gold Certificate
BSG Membership Certificate
2025
ISO 45001_2018 Occupational Health Safety Management System & SSIP Certificate
ISO 50001_2018 Energy Management System Certificate
ISO 9001_2015 Quality Management System and NHSS16 Certificate
14001_2015 Environmental Management System Certificate
Achilles Certificate of Membership Silver Plus
Achilles UVDB Audit Certificate
RISQS Certificate
CIRAS certificate 2023-24
UK SSIP Acclaim Certificate from Construction line
Construction line Gold Certificate
RoSPA Membership Certificate 2023-24
Awards
ROSPA Order of Distinction
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CIHT Active Travel Award
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CIHT Innovation & Research
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CIHT Environment & Sustainability Award
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CIHT Alun Griffiths Health, Safety & Wellbeing Award
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CIHT Collaberation Award 2025
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MIM Impact Award Finalist 2025
MIM Impact Award Finalist 2025
ROSPA 2025 Order of Distinction
Constructing Excellence Awards Morlais
Alun Griffiths Award for Community Engagement for Morlais Tidal Energy Scheme
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Severnside Diversity Award for Penrhyn Bay Coastal Defence Scheme
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Environmental Sustainability Project of the Year 2022
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George Gibby Award for A487 Caernarfon & Bontnewydd Bypass
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BSG Certificate of Excellence
(UK Member of Year) 2024
RoSPA President’s Award
BSG Certificate of Excellence
(UK Member of Year) 2023
RoSPA President’s Award
ICE Training Scheme Cert 17
RoSPA President’s Award
Considerate Constructor National Site Bronze Award
Clocaenog Forest Wind Farm
RoSPA President’s Award
The Building Safety Group
Member of the Year – Wales
Considerate Constructor National Site Silver Award
Pen y Cymoedd
CEW (Constructing Excellence in Wales) Project of the Year (Civils)
Pen y Cymoedd
CE (Constructing Excellence) National Awards Project of the Year (Civils)
Pen y Cymoedd
ICE Wales Cymru Project Awards 2018 Bill Ward Sustainability Award Winner
Pen y Cymoedd
RoSPA
Gold Medal Award
Considerate Constructor National Site Silver Award
Gold Award – Pen y Cymoedd Wind Energy Project
The Building Safety Group Health and Safety Awards
BSG Award Winner
Construction News Specialists Awards Finalist
Training Excellence
RoSPA
Gold Medal Award
Arts & Business Cymru Awards
Winners – Arts, Business & Environment category
Construction News Specialists Awards
Finalist – Training Excellence
RoSPA
Gold Medal Award
Considerate Constructor National Site
Silver Award – Pen y Cymoedd Wind Energy Project
RoSPA
Gold Medal Award
CITB Pride of Construction Awards
Outstanding Training Partner – Gold Award
CITB National Apprenticeship Awards
Large Apprentice Employer of the Year, Wales
Considerate Constructor National Site
Bronze Award – Coedty Pipeline Replacement
RoSPA
Gold Medal Award
CEEQUAL Ecology & Biodiversity Category
Highly Commended A487 Porthmadog Bypass
RoSPA
Gold Medal Award
Institution of Civil Engineers – ICE Wales
George Gibby Award 2012 Winner (projects over £3m) – A487 Porthmadog Bypass
Construction News Awards
Environmental Project Winner
Green Apple Award
Heavy Construction Silver Award
Chartered Institute of Highways (CIHT)
Major Projects Award Highly commended
Association of Consulting Engineering Excellence – ACE
Engineering Excellence Awards Highly Commended (Large Infrastructure category)
CEEQUAL
Whole Project Award – Excellent (87.9%) – Porthmadog bypass scheme
RoSPA
Gold Medal Award
CEEQUAL (environmental)
Award of Excellent (94.6%), – which was the highest mark to date, for works completed at the Parc Cybi Development, Holyhead.
CEEQUAL Outstanding Achievement Awards 2011 Winner
Historic Environment – Parc Cybi plus Highly Commended for Water & Materials Category.
ICE Wales
George Gibby Award Outstanding Project of the Year – Highly Commended for Tywyn Coastal Defence Scheme
Considerate Constructor National Site
Bronze Award – Tywyn Coastal Defence Scheme
IOD North Wales
Director of the Year Award
Stena Line and Daily Post
Company of the Year Award
Construction News Award
Finalist for Tomorrow’s Company
Policies
Anti Corruption Policy & the Bribery Act 2010
Environmental Policy
Occupational Health & Safety Policy
Business & Staff Data Responsibilities Policy
Data Privacy Policy & Notice
Whistle Blowing Policy
Energy and Carbon Reduction Policy
Sustainability Policy
Welsh Language Policy (English Version)
Polisi Iaith Gymraeg
Office & Site Security PolicyAnti-Corruption Policy and the Bribery Act 2010
Ethics & Business Integrity Policy
Equality & Diversity Policy
Employment & Industrial Relations Policy
Anti-Slavery Policy
Quality Policy
Staff Development & Training Policy
No Smoking Policy
Preventative Maintenance Policy
Young Persons & Employment Policy
Safeguarding & Child Labour Policy
Drugs & Alcohol Policy
Mobile Phone Policy
Human Rights Policy
IT Usage Policy
Social Media Policy
Site Staff Company Vehicles Policy
Refer & Earn (Employee Referral) Policy
Stress at Work Policy
Driving Policy
Maternity Policy
Second Job Policy (Professional Drivers)
Performance Improvement Policy
Sexual Harassment and Bullying Prevention Policy
Drone Usage Policy
Reports
Gender Pay Gap Report
2026
ESG Report
2024 / 2025
Jones Bros is one of the UK’s leading civil engineering contractors with a wealth of experience across a broad range of sectors.
Sectors
Energy & Renewables
Coastal & Marine Infrastructure
Highways & Infrastructure
Reservoirs
Waste Remediation & Facilities
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