20 Fenchurch Street


  • Sector: commercial
  • Status: Completed
  • Control Protocol: DALI
  • A/C Network: T-Bus / Central battery for public areas
  • Special Features: BMS
  • No. of Floors: 36
  • SQ M: 62,100
  • SQ FT: 668,926
  • Developer: LandSec
  • Main Contractor: CWC
  • Tenants: RSA, Liberty, Ascot Underwriting, Kiln, Markel Corporation & Others
  • M&E Engineers: Hilson Moran
  • Electrical Contractor: T Clarke
  • Architect: Rafael Vinoly
  • Accreditations: BREEAM
  • Score: Excellent


  • Shell and Core areas and the Cat A fit out were completed together
  • All luminaires are DALI, offering the following benefits: full feedback on light levels and lamp failures; an addressable system that can be automated; allows individual control of each fitting; provides efficient energy savings and overall is good for user comfort
  • The interior and exterior are controlled via an architectural lighting control system. It comprises an astronomical time clock and daylight sensors which provide an override for switching and dimming of lighting circuits to create different scenes: before and after sunrise; handrail lighting; green wall linear LED fitting; pedestrian walkways; entrance canopy
  • Sky Garden and public access areas are served with a Simmtronic system that integrates with the building’s central battery system


  • Previously known as the Walkie Talkie, 20 Fenchurch Street is a joint venture between Landsec and Canary Wharf Group
  • Home to Sky Garden, a rooftop garden open to the public, which claims to be the highest garden in the UK
  • The south side of the structure is ventilated externally to improve efficiency and decrease solar gain, while the east and west sides incorporate extensive solar shading
  • An influential part of the building’s sustainability is its hydrogen fuel cell – the first of its kind in the City of London. The cell converts natural gas into electricity, helping power the building, resulting in very low CO2 emissions

Thank you Simmtronic, for your professional, fast and reactive support with the delivery of these projects.

Adam Scadding

EDDS Limited

Simmtronic have delivered a large number of technically challenging projects for DBS and consistently continued to provide outstanding service. Their support, guidance and help throughout the process has been exceptional, working closely with our design teams to ensure the right solution for the project and a sound understanding of the brief, with our delivery teams to ensure the installation and commissioning are trouble free and then providing fantastic after care to the customer. They have added true engineered value into the projects they have been involved in for Derry Building Services.

Geoff Caborn

Derry Building Services

Simmtronic have been a valued member of the DBS supply chain for over 10 years. Their pro-active and collaborative approach to lighting controls from the design stage, through to commissioning is highly valued by both our Design and Delivery Engineers.

Matt Hallam

Derry Building Services

Over the years I have really appreciated the Simmtronic ability to provide responsive support and listening to projects and clients needs. More recently the Simmtronic team has shown the capability to embrace the connectivity requirements of the Internet of Things by quickly adding MQTT to their range of integration protocols. This will greatly facilitate telemetry applications in buildings and the development of interconnected solutions that will make buildings more usable and easier to operate.

Francesco Anselmo


Landsec have consistently used Simmtronic Lighting Control Systems across our new London developments for over 15 years. Simmtronic understand our requirements and get involved at the very early stages of schemes, assisting consultants in achieving the optimum design solution, often taking the lead.  They always overcome the programme challenges they are faced with on site, delivering a quality, fully tested and operational solution, on time and to budget. Simmtronic undertake the maintenance and servicing across much of our London portfolio, they have a customer focused and flexible approach that suits the needs of our business and as well as our customers.

Mark Ponzini


Simmtronic as an organisation has been, for the last 18 years, by far the best performing and most reliable lighting control system I use. From design through to commissioning and soft landings with the landlord teams Simmtronic always deliver on my projects. Simmtronic technology evolution is not just pushed through like others, but rather properly tested internally first, giving us as client teams the assurance that what Simmtronic say they can offer is 100% delivered, an absolute must with fast track major projects.

Alan Williamson


Simmtronic has constantly been available at an early stage to engage both with the designers and the Contracting team to assist with design solutions and to test options. This ultimately assists us in de-risking the project during the commissioning phase which usually defines when the project is completed. Simmtronic is seen as ‘industry standard’ and it is always encouraging to see them involved.

Jo Benson

Derwent London