Ensuring radiation safety, compliance and protection.
UK-wide supply of radioactive isotopes, NDT products, radiation detection systems, calibration and maintenance services for nuclear, industrial, medical, and safety-critical applications.
- ISO 9001 Certified
- UKAS Accredited
- Nationwide Service
Why Choose HTSL for Your Radiation Protection Needs
Trusted by leading organizations across the UK for comprehensive radiation solutions and non-destructive testing services.
Over 25 years delivering radiation and NDT solutions across all major sectors.
UKAS-accredited calibration services, ISO certified, and fully compliant with all UK radiation safety regulations.
Comprehensive coverage across the UK with rapid response times.
State-of-the-art equipment with rigorous calibration services.
Customised services for medical, industrial, nuclear, and research sectors.
We're proud to be one of the few UKAS accredited calibrations labourites in the UK.
Comprehensive Radiation, NDT & Calibration Services
Complete solutions for nuclear, industrial, medical, and research applications.
Radioactive Isotope Supply
Medical & Industrial
Comprehensive supply of radioactive isotopes for medical diagnostics, industrial applications, and research purposes.
Non-Destructive Testing
NDT Products & Solutions
Advanced NDT equipment and solutions for quality assurance and structural integrity testing.
Radiation Detection Systems
Portable & Fixed
State-of-the-art radiation detection and monitoring systems for all safety-critical environments.
RPS Training
Certified Courses
Accredited training courses for Radiation Protection Advisers and Supervisors.
Compliance Audits & QA
Full Support
Comprehensive compliance audits and quality assurance support to ensure regulatory adherence.
Equipment Commissioning
Technical Support
Expert commissioning and technical support for all radiation and NDT equipment installations.
Radiation Safety Consulting
Expert Guidance
Professional radiation safety consulting and risk assessment services for all sectors.
Calibration Services
Safety-Critical Equipment
Precision calibration services ensuring your equipment meets regulatory standards and accuracy requirements.
Radiation Protection Advisor (RPA) Services & Radiation Protection Supervisor (RPS) Training
Certified training courses to advance your career in radiation safety.
RPA Services
Radiation Protection Advisor
- Full regulatory compliance under IRR17
- Clear, practical safety guidance
- Ongoing monitoring & support
- Experienced & Accredited Advice
- 25+ Years Experience
- 22+ Sectors Supported
RPS Training Course
Radiation Protection Supervisor
- Comprehensive study materials
- Expert-led training sessions
- Industry best practices
- Certification upon completion
- 2 Day Course
- Optional NORM Addon
- Darlington, DL11GL
- All courses include compliance assurance, career progression support, and safety leadership development
We're Partnered With Leading Organisations
We’re proud to represent some of the biggest names in the radiation industry.








See what our clients say about our radiation industry expertise.
Trusted By Thousands
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Trusted By Leading UK Organisations
Serving the medical, industrial, nuclear, and research sectors nationwide.
NHS Trusts
Healthcare
Nuclear Energy
Energy
UK Universities
Research
Industrial Partners
Manufacturing
Government Labs
Government
Private Hospitals
Healthcare
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Frequently Asked Questions
Common questions about our radiation and NDT services.
What types of isotypes do you supply?
We supply a comprehensive range of radioactive isotopes for medical diagnostics, industrial applications, and research purposes. This includes sealed sources for radiation therapy, industrial radiography sources, calibration sources, and various isotopes for nuclear medicine. All supplies are fully compliant with UK regulations and include complete documentation and safety certification.
Do you support industrial NDT and calibration services?
Yes, we provide complete NDT (Non-Destructive Testing) solutions including ultrasonic testing, radiography, eddy current testing, and magnetic particle inspection. Our calibration services cover all safety-critical equipment with UKAS-accredited procedures, ensuring your equipment meets regulatory standards and maintains precision accuracy.
How do I book radiation detection or calibration services?
Booking our services is simple. You can contact us via phone, email, or through our online consultation request form. Our team will assess your requirements, provide a detailed quote, and schedule the service at your convenience. We offer flexible scheduling including emergency call-out services for urgent requirements.
What safety and compliance standards does HTSL follow?
HTSL Group operates under strict ISO 9001 certification and adheres to all UK radiation safety regulations including IRR17, EPR16, and relevant HSE guidelines. We are an accredited supplier with comprehensive quality management systems, ensuring full legal compliance and safety standards adherence for all our services and products.
What training courses do you offer?
We offer certified training courses for Radiation Protection Supervisors (RPS). Our courses are designed to meet UK regulatory requirements and provide comprehensive training on radiation safety, compliance, and best practices. We also offer bespoke training programs tailored to specific organisational needs.
What areas of the UK do you cover?
We provide nationwide coverage across the entire UK, including Scotland, Wales, Northern Ireland, and England. Our extensive network ensures rapid response times and comprehensive support regardless of your location. We can mobilize our teams quickly for emergency situations and routine services alike.
Ready to equip your team with safe, compliant radiation & NDT solutions?
Get in touch with our expert team today for a consultation or download our comprehensive product catalogue.
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Complete guide to our radiation solutions.
Accredited, compliant, and trusted by UK medical, industrial, and research organisations. All services meet regulatory standards and safety requirements.