• Expert electrical design services across a wide range of sectors

  • Efficient, and compliant electrical solutions tailored to your project needs

  • Surveys, condition reports and dilapidation assessments

At SDE we provide expert electrical design services across a wide range of sectors, including commercial, industrial, hospitality, healthcare, education, leisure, places of worship, and high-end residential projects.

We deliver full electrical design services from RIBA stages 2–7, supporting everything from minor works to multi-million-pound developments.

SDE prides itself on being highly responsive. We aim to meet our clients’ needs quickly—attending site the same week of an enquiry, turning designs around efficiently, and providing practical solutions without unnecessary delays.

Our services include:

Tender support and project assistance

Providing technical input, design clarifications, and documentation to support competitive tender submissions and smooth project delivery.

AutoCAD drawings and as-fitted plans

Producing accurate electrical layouts, schematics, and final as-fitted documentation to ensure projects are clearly detailed and compliant.

Cable sizing, circuit charts, and load calculations

Carrying out detailed design calculations in line with current BS 7671 (IET Wiring Regulations) to ensure safe, efficient, and compliant installations.

Lighting and emergency lighting design and calculations

Delivering functional and energy-efficient lighting schemes with full photometric calculations, lux level assessments, and compliance with BS 5266 standards.

Surveys, condition reports, and dilapidation assessments

Undertaking on-site inspections and reporting on the condition, suitability, and compliance of electrical installations.

O&M manual production

Compiling comprehensive operation and maintenance documentation to support client handover, long-term system use, and regulatory compliance.

Building control compliance and design to local authority regulations

Ensuring designs meet statutory requirements, local authority guidance, and national standards for approvals and certification.

Why us

At SDE, we combine technical expertise with practical experience to deliver reliable, efficient, and compliant electrical solutions tailored to your project needs.

“SDE has assisted us on many M&E projects over the years ranging from £3k to £4.2m. We have always found Craig easy to deal with and he delivers detailed submissions within a timely manner. SDE would be my first point of call with all projects, I highly recommend them”

“Working with Craig at SDE has been a game-changer for our project. Their expertise in MEP design brought clarity, efficiency, and innovation to every stage of development. From the initial planning to the final implementation, they demonstrated a deep understanding of technical requirements, compliance standards, and sustainable solutions”.

“Their ability to translate complex requirements into efficient, compliant, and buildable solutions made a significant impact on our timeline and budget. We greatly appreciated their reliability and expertise, and wouldn’t hesitate to work with them again”.

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