Nationwide Power Solutions.
LV - 33kV Jointing & Terminations / Substation Installation / Testing & Commissioning / SAP Services
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About Us
Founded by brothers Ricki and David, R&D Cable Jointing exists to help contractors, ICPs, and developers deliver HV & LV projects safely, compliantly, and on schedule.
Trusted by professionals across the UK, we are known for our quality workmanship, reliability, and deep industry knowledge. Our mission is simple: to make HV/LV jointing, substation works, and commissioning straightforward and stress free – wherever your project is.
- Proven track record delivering HV & LV projects safely and on schedule
- Trusted by contractors, ICPs, and developers across the UK
- Backed by strong industry relationships and uncompromising quality standards
Our Services
Complete Electrical Service
HV & LV Cable Jointing
Specialists in LV-33kV cable jointing & terminations
Testing & Commissioning
Prove the integrity of your installation before energisation.
Substation Installation
We build & fit out 11kV substations including SP&L
SAP Services
Authorised up to 33kV, we can provide switching, permits and supervision
Work With Us
Why Contractors Choose R&D Cable Jointing
Proven Expertise
With decades of combined experience in cable jointing and substation work, we know how to deliver quality - safely and efficiently.
End-to-End Service
From cable installation & jointing to testing & commissioning, we can handle every stage with precision and care - no hassle.
Fully Insured
We’re fully insured with public & employers’ liability cover. Protection from start to finish with safe, compliant work.
A Personal Approach
As a family-run business, we take pride in our reputation. You’ll deal directly with the people doing the work - honest, responsive & reliable.
Certified by
Need HV/LV Jointing or Substation Services?
FAQs
Your questions answered
With decades of combined experience, R&D Cable Jointing is trusted across the UK.
Whether it’s a local project or a large-scale network, we bring the same level of precision and reliability. Got a question? Get in touch – we’re happy to help.
What areas do you cover?
We’re based in the South East but provide services across the UK and are happy to travel further for larger projects. Just get in touch to discuss your location.
What voltages can you work with?
We specialise in LV, 11kV and 33kV jointing and substation work. We’re also authorised up to 33kV for SAP services.
What types of cable do you joint and install?
PILC, XLPE, Waveform and other common LV/HV cable types. If you’re unsure, just ask – we’ve likely worked with it before.
Can you handle full substation installations?
Absolutely. We take care of everything from civil works and fit-outs to testing, commissioning and DNO audit prep.
What’s the difference between a jointer and an SAP?
A jointer physically installs and connects cables, while an SAP (Senior Authorised Person) is responsible for issuing permits and ensuring the system is safe to work on. We provide both services in-house.
Can you supply materials or do you work labour-only?
We can do both. We’re happy to supply complete kits or work with your materials – whatever suits the job and your budget.
What makes R&D Jointing different?
With 30+ years of combined experience, a trusted network and a commitment to quality, we deliver reliable solutions with a personal approach.
How do I get a quote or book a job?
Simply email us at info@rdjointing.co.uk – We’ll get back to you and arrange a site visit or discuss your requirements.
Client Testimonials
