11kV Cable Jointing Contractors UK | R&D Cable Jointing Ltd
Based in Kent — Working Nationwide
11kV HV Cable Jointing Specialists

11kV Cable Jointing

11kV cable jointing for distribution networks, private networks, renewables and infrastructure projects across the UK. Prepared teams, consistent workmanship and clear communication on site.

R&D Cable Jointing provides 11kV cable jointing for utility and private networks, supporting planned installation programmes, diversions and repair works. We work to manufacturer procedures and align with your permits, outages and programme requirements. Based in Kent and working nationwide, we regularly support projects across Essex, London, Hertfordshire, Surrey, Suffolk, Cambridgeshire and Bedfordshire.

11kV Jointing for Utility and Private Networks

We support 11kV circuits on DNO distribution networks, renewable energy connections, commercial and industrial sites, and infrastructure programmes. Our focus is simple: prepared teams, consistent workmanship, and clear communication on site.

  • 11kV straight joints — XLPE and PILC, cold shrink, heat shrink and push-on systems
  • 11kV transitional joints — XLPE to PILC and other cable type combinations
  • 11kV fault repairs — failed joint replacement and cable section repairs
  • Indoor and outdoor 11kV terminations — into RMUs, switchgear and transformers
  • Support for testing and energisation
  • Planned installation on new builds, diversions and network reinforcement programmes

Joint Systems and Cable Types

We have experience across the full range of 11kV joint systems and cable types encountered on UK networks:

  • Cold shrink joint kits — 3M, Prysmian, Nexans and other manufacturer systems
  • Heat shrink joint kits — XLPE and PILC cable construction
  • Push-on (slip-on) joint systems for XLPE cables
  • PILC to XLPE transition joints
  • 3-core and single-core cable configurations

What to Expect on Site

  1. Scope confirmation — cable type, joint type, route, access and outage windows confirmed before mobilisation.
  2. RAMS and controls — method statements aligned to your site rules, permits and working arrangements.
  3. Quality-first jointing — manufacturer procedures followed, clean handling and controlled build-up throughout.
  4. Checks and readiness — jointing records completed, ready for testing and energisation support if required.
  5. Clear handover — sign-off support and close-out of snags.

Areas: Essex, London, Kent, Hertfordshire, Surrey, Suffolk, Cambridgeshire, Bedfordshire and nationwide. Send us your programme dates and location and we will confirm availability.

Frequently Asked Questions

What areas do you cover?
Based in the South East (Kent), we work nationwide across the UK. We regularly support projects across Essex, London, Kent, Hertfordshire, Surrey, Suffolk, Cambridgeshire and Bedfordshire, and travel further for larger projects.
What voltages can you work with?
LV, 11kV and 33kV. Our SAP authorisations cover up to 33kV for switching, permits and live working supervision.
What types of cable do you joint?
PILC, XLPE, Waveform and other common LV/HV cable types. If you're unsure whether we can handle your cable type, just ask.
Can you handle full substation installations?
Yes. We handle everything from landing, earthing and fit-out through to testing, commissioning, DNO audit attendance and taking control of the LV network on connection day on behalf of the IDNO.
What's the difference between a jointer and a SAP?
A jointer physically installs and connects cables. A Senior Authorised Person (SAP) issues permits and ensures the system is safe to work on. We provide both in-house.
Can you supply materials or work labour-only?
Both. We're happy to supply jointing kits and accessories, or to work with your own supplied materials — whatever suits the job.
How do I get a quote?
Email info@rdjointing.co.uk with your scope, cable type, voltage and location. We'll come back quickly with availability and a clear plan.

11kV jointing project in the programme?

Send over the scope, location and programme dates and we'll come back with availability and a straightforward plan.