Office Refurbishment at Stratton House: Efficient Delivery for a Global Financial Institution

Completing a High-Spec Electrical Refurbishment in a Grade II Listed Landmark in Mayfair

Office refurbishment at Stratton House allowed a global financial firm to relocate into a newly upgraded, high-speed, CAT-6 connected workspace in the heart of Mayfair. Stratton House, a Grade II listed property in central London’s Mayfair Conservation Area. To make this possible, they required a complete office refurbishment—including structured cabling, a lighting system upgrade, and CAT-6 connectivity throughout the floor.

GCL was selected to deliver the project. With tight timelines and heritage site constraints, the electrical installation needed to be completed efficiently, on budget, and without disruption to surrounding tenants.

Refurbishment Requirements for Stratton House

The client’s brief for the office refurbishment at Stratton House included:

Meeting a fixed relocation deadline
Ensuring no disruption to ongoing business operations
Designing an energy-efficient lighting system
Providing high-speed network connectivity
Completing all work in compliance with heritage regulations

In addition, the project required careful scheduling to avoid conflict with other tenants in the building.

The Challenges

Initially, the client had to delay the project start by three weeks. However, the original deadline remained unchanged. As a result, GCL had to complete the full refurbishment within a significantly reduced timeframe.

Other project challenges included:

Working within a fully occupied building while minimising noise
Ensuring timely delivery of all materials
Coordinating trades across restricted working hours
Relocating the existing UPS (uninterruptible power supply) without affecting operations

GCL’s Solution for Stratton House

To stay on track, GCL refined their project process and brought in additional manpower. Moreover, they worked closely with other contractors on site to enhance coordination and reduce downtime.

GCL’s efficient approach included:

Delivering materials only when needed, reducing onsite storage
Improving communication across teams to maximise installation speed
Relocating the UPS out of hours to ensure business continuity
Installing energy metering equipment and monitoring systems as part of a global HQ strategy

Thanks to this proactive planning, GCL completed the office refurbishment on time, without compromising quality.

Benefits to the Client

The client experienced a smooth transition into their new office space—starting work on Monday morning with no disruption to business. GCL’s cabling installation delivered fast, secure CAT-6 connectivity for every workstation.

The office refurbishment at Stratton House provided:

Smart, client-ready meeting rooms
Increased office productivity
Peace of mind that all work was compliant and professionally delivered

This work aligns with guidance from Historic England on Listed Buildings to protect architectural heritage during modernisation.

We were very pleased with GCL on this project, delivered on time, in budget and with outstanding results. This can only be attributed to GCL’s professionalism in their understanding of our requirements, active listening, and their innovation & flexibility. Their proactive approach has led to another successful project completion

IT and Facilities Manager

Designer