Aldermanbury Square
Complete electrical scope for the sprinkler plant room and the controls and interfaces of a four-room protected pre-action sprinkler system at 2 Aldermanbury Square in the City of London.

Sprinkler plant room and four-room pre-action installation.
WSD delivered the complete electrical installation associated with the sprinkler plant room and a four-room protected pre-action sprinkler system at 2 Aldermanbury Square in the City of London.
The project started with detailed coordination meetings and site surveys to establish the operational requirements of both the plant room and the protected pre-action areas. Working closely with the sprinkler contractor, the main contractor and other trades, we built an installation strategy that ensured every critical fire protection asset received resilient, compliant electrical services.

Our engineers installed containment systems, power supplies, control cabling and interface wiring throughout the sprinkler plant room and the protected areas. Particular attention was given to cable routing, equipment accessibility and future maintenance. The installation incorporated monitoring and control interfaces to enable effective communication between the pre-action systems and the wider building fire and life-safety infrastructure.
Throughout the programme, works were carefully phased to align with other trades and minimise disruption to the overall construction schedule. A comprehensive testing and commissioning programme followed, verifying the operation of every electrical system, control, alarm and monitoring function on the project. Delivery concluded with as-installed documentation, test certification, operation and maintenance information, and a formal client handover — leaving a fully operational and compliant fire protection installation behind us, delivered to BS 7671 and the project’s fire protection standards.

Sprinkler plant room electrical
Containment, power supplies, control cabling and equipment interfaces throughout the sprinkler plant room.
Four-room pre-action controls
Control and interface wiring for a four-room protected pre-action sprinkler system.
Building life-safety integration
Monitoring and control interfaces connecting the pre-action systems back to the building's wider fire and life-safety infrastructure.
Testing, commissioning and handover
Full testing and commissioning of every electrical, control, alarm and monitoring function. As-installed drawings, test certification and O&M documentation issued at handover.
Three of our disciplines, one site.
Pump Wiring & Control Circuits for Sprinkler & Wet Riser Systems
Electrical containment, wiring and control circuits for sprinkler and wet riser pump systems. Plant room electrical install, designed and built in-house.
Pre-Action & Deluge Systems
The electrical side of pre-action and deluge fire suppression systems. Detection, control panels, cause-and-effect, integration. Tyco, Viking, Reliable, Victaulic.
Full Life Safety Monitoring
Centralised signal monitoring for sprinkler, wet riser and life safety systems. Local panel, remote diagnostics, integrated with the wider fire strategy.
Other recent projects.
A couple more case studies along similar lines.

Sherborne MRF Sprinkler Upgrade
Replacement of zone-check systems and upgraded pump controls across a 12,000 m² material recovery facility, completed in two phased weekend shutdowns.

Central House
Networked addressable fire alarm system across 400+ devices, with graphics-panel monitoring and an ongoing maintenance contract.

Ley & Wheeler Warehouse & Distribution
Self-regulating trace heating installation for sprinkler tanks and pipework in a −25 °C cold storage facility.

Aldermanbury Square
Aspirating smoke detection across two server halls, with central monitoring and quarterly servicing.

Aldgate
Self-test emergency lighting retrofit across six floors, including monthly compliance reporting.

Chelsea Barracks
Electrical installation for the sprinkler pump room, monitored valve sets and trace heating frost protection at the Chelsea Barracks residential redevelopment in London.




