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Blossom Street, London - zencontrol UK

Blossom Street

Location:

London, England

Client / Developer:

British Land

Contractor:

Skanska

Consultant:

Arup

Lighting Designer:

Studio Fractal

Project Overview

Blossom Street is a landmark commercial redevelopment in the heart of London, designed to deliver a modern, sustainable workplace that prioritises wellbeing, flexibility, and long-term adaptability. From the outset, British Land set a clear ambition: create a digitally enabled building that could seamlessly integrate lighting, energy data, and operational insights into a wider smart-building ecosystem.

zencontrol was selected to deliver a future-ready lighting control solution that not only met today’s performance and sustainability targets, but also provided the intelligence and connectivity required for a truly smart building.

The Solution

A fully addressable DALI-2 lighting control system was implemented across the building, controlling all luminaires, sensors, relays, and switches. The solution delivers granular control of lighting scenes, automated scheduling, occupancy-based operation, and comprehensive emergency-lighting monitoring and testing.

At the core of the system, zencontrol application controllers integrate the DALI-2 network into British Land’s digital-building platform. Lighting status, sensor data, energy information, and emergency-test results are exposed via BACnet/IP and MQTT, enabling every device to be tagged, visualised, and centrally managed within the client’s smart-building ecosystem.

Key Features

  • DALI-2 PIR and multi-sensors controlling office floors, staircases, WCs, circulation areas, plant rooms, and basements
  • Daylight harvesting in office spaces to automatically dim lighting in response to available natural light
  • Corridor-hold functionality to maintain illumination in circulation areas when adjacent offices are occupied
  • Retractive switch interfaces for flexible user control in plant and basement areas
  • WC water solenoid valve control via DALI relays linked to occupancy sensors
  • Site-wide external lighting controlled by astronomical timeclock
  • Fire alarm integration that raises all lighting levels to 100% during alarm events
  • Full emergency lighting monitoring and automated testing in compliance with IEC 62034
  • Cloud-based graphical user interface (GUI) providing real-time monitoring, diagnostics, scheduling, and reporting
  • Energy, luminaire, and diagnostic data available for ongoing performance optimisation

Why DALI-2?

DALI-2 was chosen to support the client’s vision of a flexible, sustainable, and data-driven building. The standard’s full addressability enables precise control at device level, while its open protocol supports seamless integration with wider building systems.

At Blossom Street, DALI-2 underpins:

  • Enhanced occupant comfort through responsive, sensor-driven lighting
  • Reduced energy consumption via daylight harvesting and intelligent occupancy control
  • Simplified maintenance and compliance through automated emergency testing and detailed diagnostics
  • Long-term adaptability, allowing spaces and control strategies to evolve without major infrastructure changes

By adopting DALI-2 multi-sensors and advanced control logic, the system reinforces the project’s commitment to sustainability while delivering a high-quality user experience.

A Smart Building in Action

Every DALI device within the building is individually addressed and visualised within zencontrol’s cloud-based GUI. Facilities teams can monitor performance in real time, access emergency-lighting test results, adjust schedules, and manage changes remotely.

Through BACnet/IP and MQTT integration, lighting data becomes part of British Land’s wider digital-building ecosystem—supporting smarter decision-making, improved operational efficiency, and a truly connected building environment.

A Best-in-Class Installation, Expertly Delivered

Blossom Street exemplifies what is possible when intelligent lighting control is designed as a core component of a smart building strategy. The project combines advanced sensing, energy-efficient control strategies, user-responsive operation, and robust life-safety integration within a fully standards-based DALI-2 architecture.

With complete device visibility, automated emergency compliance, and seamless interoperability across the building’s converged data network, zencontrol has delivered a scalable, future-proof solution that maximises efficiency, enhances safety, and elevates the workplace experience.

This project sets a new standard for data‑driven, modern lighting control, surpassing traditional expectations for lighting control installations.