Tethion works alongside clients and design teams to coordinate compliance, facilitate multidisciplinary collaboration and help dutyholders demonstrate how regulatory requirements have been considered throughout the project.
Typical support includes:
- Building Regulations compliance coordination and documentation
- Design team compliance workshops
- Gateway support for Higher-Risk Buildings
- Compliance reviews and design audits
- Ongoing coordination during design development
.jpeg/:/rs=w:388,h:291.72932330827064,cg:true,m/cr=w:388,h:291.72932330827064)
Effective health and safety starts long before construction begins.
As CDM Principal Designer, Tethion supports clients in planning, managing and monitoring the pre-construction phase, helping designers identify and manage foreseeable risks while improving coordination across the project team.
Typical support includes:
- Client advice under CDM 2015
- Design risk coordination
- Design team workshops
- Pre-Construction Information
- Health and Safety File preparation
- Design review and coordination
Fire safety influences every stage of a project's design and construction.
Tethion provides practical fire safety advice that integrates with the wider design team, helping projects achieve compliance while maintaining buildability and operational performance.
Typical support includes:
- Fire strategy reports
- Building Regulations Part B advice
- Healthcare fire safety
- Technical fire safety reviews
- Design team coordination
- Fire safety compliance assessments
Passive fire protection is only effective when it is properly coordinated with the wider building design.
Tethion supports project teams by reviewing fire-resisting construction, service penetrations and compartmentation strategies, helping ensure fire protection measures are practical, coordinated and capable of achieving their intended performance.
Typical support includes:
- Passive fire protection design advice
- Service penetration reviews
- Builderswork reviews
- Product and system reviews
- Technical design support

Independent technical advice can provide confidence where projects involve complex regulatory or compliance challenges.
Tethion delivers proportionate technical reviews and independent assurance, helping clients and project teams identify issues early and make informed decisions.
Typical support includes:
- Independent technical reviews
- Compliance audits
- Client monitoring assistance
- Expert technical advice
- Peer reviews
- Regulatory support
- CPD presentations