A Complete Guide for Asset Managers
Environmental protection around LV, MV and HV transformers is a growing priority for utilities, renewable energy developers, industrial sites and BESS operators. With increasing regulatory pressure around oil containment, many sites are upgrading to modern Transformer Bund Filters—a passive, low-maintenance system that allows clean rainwater to drain while preventing oil from escaping a transformer bund.
A Transformer Bund Filter is a passive drainage system installed on oil-filled transformer bunds to let clean rainwater escape while automatically sealing if the filter becomes inundated with oil.. These systems contain hydrocarbon-absorbing media and a self-activating shut-off valve that prevents any contaminated water from leaving the bund.
DrainEezy Bund Filters are now widely used across:
The DrainEezy system uses hydrophobic media ensuring:
| Features | Draineezy Bund Filter | Oil-Water Separator |
|---|---|---|
| Power Required | No | Yes |
| Maintenance | Low | High |
| Installation Cost | Low | High |
| Environmental Risk | Very Low | Medium |
| Response to Oil Spill | Automatic Shut-off | Manual Intervention |
Thorne & Derrick supply the full range of Draineezy Transformer Bund Filters, fitting kits, pre-filters and technical support.
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| DrainEezy Bund Filter | DrainEezy New Design | Oil Filled Transformers |
Thorne & Derrick distribute the most extensive range of 11kV 33kV Cables, Cable Jointing, Terminating, Pulling & Installation Equipment – we service UK and international clients working on underground cables, overhead lines, substations and electrical construction at 11kV 33kV and up to and EHV transmission and distribution voltages; approved stockists and suppliers of 3M Electrical (ColdShrink), Nexans (Euromold), Pfisterer (CONNEX) and Lovink cable accessory and connection products.
Joints, Terminations & Connectors | MV HV | 11kV 33kV 66kV
Thorne & Derrick, a Specialist Electrical Distributor for Lucy Zodion, have successfully completed delivery of the industry-leading Fortress range of feeder pillars to a major street lighting project for the Highways Department of Nottinghamshire County Council. The project demonstrated our combined customer service excellence, communication speed and technical support while ensuring full compliance to client specification. Upon payment completion the consignment of 27 feeder pillars was delivered ex stock from factory to field within 3 days.
Project Overview:
Fernmac Limited, sub-contracted to Nottinghamshire County Council, urgently required 27 galvanised steel feeder pillars delivered from stock to precise technical specifications for installation across the county’s highways network. Although Lucy Zodion was not the specified manufacturer, their Fortress range of feeder pillars recommended by Thorne & Derrick, fully satisfied the council’s design and performance requirements. Each feeder pillar was required to:
Tight project timescales meant Fernmac needed a proactive and technically capable supply partner to coordinate specification, communication and logistics with Lucy Zodion.
Upon receiving the enquiry, Thorne & Derrick reacted quickly to review the design drawings, confirm compatibility and liaised directly with Lucy Zodion to secure the required units from available stock. This rapid and coordinated approach ensured that the project remained on schedule, with all 27 feeder pillars delivered and installed in line and in time with the local authority requirements. By maintaining close communication between Fernmac, Lucy Zodion, and the council’s highways contractor, Thorne & Derrick ensured a smooth and efficient delivery process.
The successful delivery of the feeder pillars demonstrated the value of agility, communication and collaboration across the supply chain.
Key outcomes:
Overall, working with Thorne & Derrick was an excellent experience. They’re professional, knowledgeable, and genuinely committed to customer service, and we’d be happy to work with them again.
– Tom Cressey, Fernmac Limited
Should you require support with the design and manufacture of standard or pre-wired Low Voltage Distribution Pillars please do not hesitate to contact Thorne & Derrick – specialist application and engineered feeder pillars are available to suit design requirements of Solar & BESS, Renewable Energy, Data Centre, Rail, EV and DNO projects for Independent Connection Providers (ICPs).
Thorne & Derrick International, based in the UK, are leading Specialist Distributors of LV-HV Cable Accessories, Jointing, Tooling, Substation & Electrical Eqpt Distributors and have been an Approved Supplier of Lucy Zodion for over 15 years.
Lucy Zodion is a leading UK manufacturer of street lighting control and power distribution equipment. Their Fortress range of feeder pillars is designed for durability, safety, and performance across infrastructure, highways, and industrial applications. Learn more here.
The Faraday Centre, based at the Wilton Centre in Redcar & Cleveland specialise in the delivery of High Voltage & Electrical Safety Training Courses for AE’s, SAP’s, Jointers & Duty Holders operational up to 33kV across all industrial sectors – manufacturing, renewables, BESS, offshore/marine, utilities, facilities management and data centres.
Many clients attend from across the UK and globally.
The Faraday Centre is home to and will be hosting the Inaugural Power Group Meeting, and we would like to personally invite you and your organisation to either Exhibit or attend as a Visitor.
The Faraday Power Group is a collective of companies rooted in the region of the North of England who work together with passion as a network to improve safety, introduce innovation and support entirely the requirements of the Electrical Power Industry.
Open Trade Day – The Faraday Centre
📅 Tuesday 25 November 2025
🕙 10:00 – 15:00 (Visitors’ Access)
📍 The Faraday Centre, Wilton Centre, Redcar & Cleveland
💼 Exhibitors & Visitors: Free of Charge
Purpose of the Day
What’s included (Free)
The Faraday Centre combines world leading electrical safety knowledge with the world’s best learning experiences to create High Voltage Training you can trust.
Important Site Information
The Wilton Centre is a COMAH site, therefore all visitors (including exhibitors) must complete a quick visitor safety induction. If completed online beforehand via our instructions, your pass will be ready on arrival. If completed on the day, please allow an additional 15–20 minutes to physically complete it with the Falck induction team.
⛔ No under-18s Permitted/ Right Of Admission Reserved (COMAH site).
Exhibitor Set-up
🕗 08:00 – 09:30
Stall space is compact – please plan for a round table display. You are welcome to bring a small banner and marketing materials, as well as demo products/merchandise. If you have any special requirements (power, equipment placement, product demonstrations), just let me know.
To Register Interest (Exhibit or Attend): please message : 📧 [email protected]
If you have dietary requirements or allergies, please include that in your reply so catering can accommodate appropriately.
We are incredibly proud of the innovation happening in the North East of England and want this to become a place where new partnerships, contracts and collaborations start. It would be great to have you with us.
Thanks, and we hope to welcome you on the day.
The Faraday Centre Ltd
The Wilton Centre Annexe
South Building
Wilton Centre
Redcar, TS10 4RF
LV-HV Jointing, Termination, Substation & Electrical Eqpt Distributors 600V to 66kV
Authorised Stockists & Distributors for Leading HV Cable Accessory Manufacturers
Testimonial
Organiser | EA Technology
Event | Industrial Forum 2025
Title | Keeping Electrical Switchgear Safe
Date | 14th October
Location | Chester Racecourse
By | Chris Dodds (Sales & Marketing Manager at Thorne & Derrick | Co-Exhibitor with Bill Earlie (Commercial Manager at PENTA Electrical Safety Products)
I would like to congratulate and thank the EA Technology Team for a highly professional, intensely engaging and strongly attended Event. The Forum successfully attracts Senior Power Engineers together sharing and shaping innovation, improvement and experiences combined with candid discussions of industry “pain-points” and appropriate responses.
These challenges included arc flash protection, cable duct sealing, competency complacency, predictive v reactive maintenance and adoptable guidance on ensuring documentation, policy and procedure are fit-for-purpose in the context of rapid and dynamic industry change.
The Event readily facilitated productive introductions to the highest-level KDM’s responsible for high voltage power reliability across all sectors of the economy.
We would not hesitate to recommend or attend future events organised by the EA Technology Team and look forward to future collaboration.
Pictured Left to Right | Bill Earlie (Commercial Manager PENTA Electrical Safety Products), Chris Dodds (T&D), Carl Cox (T&D Sales Engineer) & Jason Eardley (Sales Engineer PENTA).
EA Technology is a global, independent provider of end-to-end power engineering solutions, supporting customers in managing and operating electrical assets reliably, safely and efficiently. Recognised as a world-leading expert in its field, working collaboratively with partners across the energy, utilities, infrastructure and associated sectors.
Specialist Distributors of MV HV Cable Accessory & Connection Products
MV HV High Voltage Cable Joints | Cable Terminations | Cable Connectors | Distributed from Stock | UK & Export Sales
Thorne & Derrick distribute the most extensive range of MV HV Medium & High Voltage Cable Joints, Terminations & Connectors from manufacturers including 3M, Sudkabel, Prysmian, Nexans Euromold, Elastimold, Pfisterer CONNEX & SEANEX and Shrink Polymer Systems.
Heat shrink, cold shrink, push-on and slip-over cable accessories enable the jointing, terminating and connection of 11kV-33kV and 66kV-132kV cables to oil, air or gas insulated switchgear, transformers, motors and overhead lines distributing electricity at medium/high voltages.
Thorne & Derrick hold large stocks of 11kV 33kV 66kV Joints & Terminations suitable for XLPE, PILC and EPR cables, in both heat shrink and Cold Shrink technologies, to service the medium/high voltage power cable accessory requirements of UK and international customers.
Thorne & Derrick International, the UK’s leading Specialist Distributor of LV HV Cable Accessories, Tooling & Hazardous Area Electrical Equipment, are celebrating 40 years of supplying products and solutions that ensure the safety and reliability of industrial heating, lighting and power systems.
From Fossil Fuels to Sustainable Future
Established in 1985 as a regional business supplying the fossil fuel and heavy industries, whose clients then included UK Coal plc, ICI Wilton and Swan Hunter Shipbuilders on the River Tyne, Thorne & Derrick have successfully innovated and evolved alongside the shifting and reshaped industry landscape over four decades. Today, they are proudly powering Energy Transition by delivering MV/HV Electrical Equipment & Cable Accessories to major renewable energy projects.
Our Shelf to Your Site, Globally
Thorne & Derrick are framework supply partners to ECP’s and international energy providers across the UK and Europe, including Spain, France, Germany, Switzerland, Sweden and Denmark – a highly successful, customer-centric and globally competitive business.
With a substantial Distribution & HV Cable Accessory Kitting Centre, multi-million pound stocks and Technical Sales Teams to specify and supply client requirements – T&D are servicing utilities, wind, solar, battery storage, rail, oil/gas, hydrogen and the explosive atmosphere sectors.
High Voltages & Hazardous Areas
“We are contributing to Green Grid electrification supported by our world-class supply chain including 3M, Nexans Euromold, Pfisterer, Lovink and Sudkabel; daily delivering Cable Accessories to joint, terminate and connect power literally from substation to socket,” comments Chris Dodds (Thorne & Derrick’s Sales & Marketing Manager).
“Equally, we are trusted and trained to supply correctly Certified Hazardous Area Equipment to ensure ATEX, IECEx and DSEAR Compliance. We provide customers with value-added solutions including design and survey services for heat trace and hazardous area lighting systems, Jointer Training Courses up to 66kV and accredited CPD’s across numerous industry subjects.”
Energy Transition
From those fossil fuel roots in the 1980’s onwards to Net Zero 2050, T&D have rapidly adapted, innovated and grown – their 40 year journey reflects a commitment to partnerships, investment in staff and a firm focus on delivering customer service excellence.
Thorne & Derrick have proactively pivoted towards the future; we are at the forefront in supporting a modernised renewable energy system, achieving industry decarbonisation via hydrogen and CCUS projects and committed to continued service to all customers in high-voltage, hazardous and harsh environments.
“Finally, in a powerful symbol of both business and industrial progress we return to the banks of the River Tyne and to the reimagined Swan Hunter site, where 40 years later we continue to service customers. Once a shipyard but today the UK manufacturing and services hub for offshore wind energy – it’s a full-circle moment that emphatically reflects Thorne & Derrick’s resilience and vision,” concludes Chris Dodds.
Thorne & Derrick are Specialist Distributors of LV HV Cable Installation, Jointing, Substation & Hazardous Area Electrical Equipment to international energy providers, EPC’s and HV Jointing Contractors working on the design, construction and maintenance of UK, European and international projects – T&D are servicing the utilities, wind, solar, battery storage, rail, oil/gas, hydrogen and the explosive atmosphere sectors.
T&D are Main UK Distributors of Medium Voltage Cable Joints, Terminations & Connectors from 3M Electrical, Lovink, Nexans Euromold, Pfisterer Connex and Sudkabel.
Published 09 Jan 2026
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