Nationwide Power Solutions.
LV - 33kV Cable Jointing & Terminations / Substation Installation / Testing & Commissioning / SAP Services
Trusted By
What we deliver
- LV – 33kV Jointing (All Cable Types)
- Full Substation Installation & Fit Out to DNO / IDNO Specs
- Substation Small Power & Lighting Install
- Internal & External Substation Earthing
- CTs & CT Wiring For COP3/5 Metering Box Installation
- LV STC Panel Installation & Commissioning
- DNO/IDNO Compliance & Audit Support
- MSDB Installation, Lateral Cable Installation
- MSDB Mains, Service & Cutout Terminations
- All Types of Cable Pulling on Site and Offsite up to 33kV
- EV / Solar / BESS Substations: HV/LV Work (All Types)
- Off Site Civils: Joint Bays, Cable Routes, Dig, Back Fill,
Reinstate, Substation Bases, Land Pre-cast Substation Bases
Our Services
Complete Electrical Service
HV Cable Jointing
11kV-33kV cable jointing & terminations
HV Testing & Commissioning
Prove the integrity of your installation before energisation.
HV Substation Services
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 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?
LV, 11kV & 33kV
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 landing, earthing & fit-out to testing, commissioning, DNO audit attendance & taking control of the LV network on behalf of the iDNO on connection day.
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 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
