Electric vehicle charging is now a routine part of new developments, refurbishments, and infrastructure upgrades. However, designing an EV charging installation is  not just a case of adding another circuit . UK regulations place specific and often misunderstood requirements on EV charging equipment — particularly around  earthing, protection, and supply capacity . For clients, developers, and installers alike, getting this wrong can mean  non-compliance, delays, or costly re

How our small consultancy can deliver faster, smarter, more cost-effective results. In today’s fast-moving construction and engineering landscape, companies are under constant pressure to deliver high-quality projects on tighter budgets and shorter timelines. Yet many organisations still struggle with the same bottleneck: finding the expertise, time, and resources to produce reliable, compliant electrical designs and drawings. That’s where strategic outsourcing can transform

The Institution of Engineering and Technology (IET) and BSI have confirmed the final content of BS 7671:2018 Amendment 4 (2026) . This is the next major update to the UK’s national wiring regulations. Scheduled for release on 15 April 2026 , this amendment reflects the rapid growth of energy storage systems , digital infrastructure , and advanced low‑voltage technologies  across domestic, commercial, and industrial installations. For electrical contractors, designers, and dut

Lighting is one of the biggest opportunities for businesses to reduce energy use, lower operating costs, and improve the quality of their spaces. Yet it’s often overlooked or treated as a simple “like-for-like” replacement exercise. At DDP, we take a different approach. As an electrical design consultancy, we design lighting systems that align with best practice, support building users, and deliver real, measurable savings. In this blog, we explore the key principles of good

Emergency lighting is a  legal and safety-critical requirement  in most commercial buildings. In the UK, the design, installation and maintenance of emergency lighting systems is governed by  BS 5266 , supported by the Regulatory Reform (Fire Safety) Order 2005 and Building Regulations. As an electrical design consultancy, we regularly help clients interpret BS 5266 correctly and translate it into  practical, compliant lighting designs  that satisfy Building Control, Fire Ris