Case Studies & Technical Expertise
Real-world electrical, fire alarm and compliance work across London and the South East. Explore how we solve complex faults, upgrade ageing systems and help clients stay safe, compliant and fully certified.
Electrical Guidelines (BS 7671)
BS 7671 remains the cornerstone of electrical safety in the UK. It sets the design, installation, inspection and testing requirements for electrical systems in domestic, commercial and industrial settings. In practical terms, this means that every upgrade, remedial repair and new install should be assessed against the current wiring regulations, risk factors and the operational requirements of the property.
1.1 Electrical design and suitability
Every installation must be suitable for the intended use of the building and the expected load profile.
When faults are found during an EICR or inspection, the issue is often not simply a failed component but a deeper problem with circuit design, earthing arrangements, overloading, or poor historical workmanship.
1.2 Protective devices and fault protection
RCDs, RCBOs and protective devices must be selected and coordinated to match the installation characteristics.
In particular, where nuisance tripping, poor discrimination or lack of fault protection are identified, upgrading the consumer unit or selecting the correct protective device is often essential for safe continued operation.
1.3 Testing, inspection and certification
Inspection and testing should confirm that the electrical installation remains safe for continued use and compliant with the design intent.
The result is not just a pass certificate, but documented evidence that the installation has been reviewed against the appropriate standards and maintained to a safe operational standard.
Fire Alarm Standards (BS 5839)
BS 5839 covers the design, installation, commissioning, servicing and testing of fire detection and alarm systems. It is especially important for domestic rental properties, commercial premises, care settings and mixed-use buildings, where system performance and reliability can directly affect evacuation and emergency response.
2.1 System design and category selection
Fire alarm systems must be selected according to the use of the building, occupancy profile and likely risk factors.
This may include considerations for manual call points, smoke or heat detection, sounders, and the required system zoning.
2.2 Routine testing and maintenance
Routine inspections are critical to ensure detectors, alarms and control panels remain operational.
Where a system has been neglected or has suffered environmental wear, upgrades or replacement may be needed to restore compliance and reliability.
2.3 Integration with emergency lighting and evacuation planning
Fire detection systems should not be considered in isolation. They often work alongside emergency lighting, escape signage and management procedures.
In occupied buildings, a joined-up maintenance approach is essential to maintain both compliance and operational safety.
Fire Risk Assessments (RRFSO 2005)
The Regulatory Reform (Fire Safety) Order 2005 places duties on the responsible person for a building to carry out a suitable and sufficient fire risk assessment and to implement the necessary fire precautions. This includes understanding who may be at risk, reviewing fire safety arrangements and identifying practical steps to reduce risk.
3.1 Duty holder responsibilities
The responsible person must assess the risk to relevant persons and determine suitable fire precautions.
This process may involve reviewing escape routes, alarm systems, emergency lighting, signage and the management of combustible materials.
3.2 Records, reviews and ongoing monitoring
Fire risk assessments are not static documents. They should be reviewed as occupancy, layout or equipment changes occur.
Property owners and managing agents should consider whether the assessment remains suitable and whether any upgrade or maintenance work is required to keep the premises compliant.
3.3 Risk reduction and practical actions
Where risk is identified, the appropriate response may include alarm upgrades, emergency lighting improvements, compartmentation checks and better management procedures.
These actions are not just compliance measures; they reduce real operational risk and strengthen the safety of the people using the building.
Fuse Board Replacement After Failed EICR – Romford
After an EICR identified safety issues, we fitted a compact FuseBox consumer unit with Type A RCBOs and SPD, completing the replacement the same day.
Failed EICR: Electrical Intake and Distribution Boards – East Ham, E6
An unsatisfactory EICR revealed safety concerns across the intake, main board and under-stairs top board. The observations were explained to the customer and a remedial quote was provided.
Kitchen Extension Electrical Installation and Rewire – Buckhurst Hill, IG9
Electrical installation and rewiring for a kitchen extension, documented against BS 7671 requirements with Part P certification.
Commercial Surge Protection – Canvey Island
A commercial laundry in Canvey Island suffered two surge events destroying machinery. See how a 3‑phase SPD restored compliance and prevented thousands in losses.
TT Earthing Conversion After Defective UKPN Earth – Barking, IG11
In Barking, IG11, a defective supply earth stopped an EV charger connection. We installed a TT earth electrode, upgraded the RCDs and certified the electrical work.
Grade A Fire Alarm Installation – Dartford Childcare Property
Grade A system installation, commissioning and certification for a childcare rental property, including four emergency lights.
Grade D Radio-Linked Smoke & Heat Alarms – Dartford HMO
Mains-powered, radio-linked smoke and heat alarms with battery backup for a six-bedroom HMO, installed to BS 5839-6.
Electrical case study · Buckhurst Hill, IG9
Kitchen Extension Electrical Installation and Rewire
See how we completed the electrical installation and rewire for a kitchen extension, with the work documented against BS 7671 requirements and Part P certification.
