| Project | A&O Shearman London Headquarters Relocation, 2025 – August 2026 | Sector | Commercial / Legal / Corporate Office |
| Location | 2 Broadgate, London | Building Size | 354,000 sq ft |
| Delivery Partner | MCS | Project Type | Major office relocation and fit out |
| Enviro Role | Mechanical commissioning management | Key Focus | BG/29/21 management, BS 8558 management |
| End User | A&O Shearman |
Commissioning is often associated with the final stages of a construction project — when systems are tested, witnessed, signed off and handed over.But the best commissioning outcomes rarely start at the end.
They start much earlier.
When commissioning is considered during design and pre-construction, project teams have a better opportunity to identify risk, understand system requirements, plan responsibilities and build a clearer route to handover. When it is left too late, the opposite can happen: incomplete systems, unclear ownership, poor access, missing documentation and late-stage programme pressure.
For ENVIRO, early commissioning planning is a core part of effective commissioning management and validation services. It helps project teams move from design intent to practical delivery with greater clarity, control and confidence.
Project Overview
A&O Shearman is relocating its London headquarters from One Bishops’ Square to 2 Broadgate, a major commercial development on the Broadgate campus near Liverpool Street Station.
The firm has signed a lease to occupy 354,000 sq ft of environmentally conscious workspace, with a phased move planned across winter 2026 and early 2027. The new headquarters will reduce the firm’s footprint from almost 500,000 sq ft, creating a more agile, high-tech and open-plan working environment.
Located next to Liverpool Street Station and the Elizabeth Line, the project represents a major corporate relocation within one of London’s most connected commercial districts.
The Challenge
The scale and profile of the relocation required a structured commissioning management approach to support programme certainty, technical compliance and system performance.
With a high-quality office environment, data room heat-load requirements, domestic water compliance obligations and multiple mechanical systems requiring coordination, the project demanded clear management, robust documentation and close control of commissioning activity.
ENVIRO was appointed to provide mechanical commissioning management services, helping to coordinate key commissioning activities and support the project team through critical stages of delivery.
Our Approach
Employed by MCS, ENVIRO provided mechanical commissioning management support across key building services packages.
The team focused on ensuring commissioning activity was properly planned, coordinated, managed and documented in line with project requirements.
This included BG/29/21 management, HVAC commissioning management, ductwork cleaning management, heat-load test authoring and management, and BS 8558 management for domestic water systems.
ENVIRO also supported chlorination and domestic water performance testing, helping to ensure systems were progressed in a controlled and compliant manner.
Key Services Delivered
- Mechanical commissioning management
- BG/29/21 management
- HVAC commissioning management
- Heat-load test authoring and management
- Ductwork cleaning management
- BS 8558 management
- Chlorination management
- Domestic water performance testing
- Domestic water commissioning and balancing
- Coordination of commissioning documentation
- Support through phased project delivery
Objective
The project forms part of A&O Shearman’s move towards a more efficient and future-focused workplace.
The new 2 Broadgate headquarters will provide a modern working environment designed around agility, technology and collaboration, while reducing the firm’s overall occupied footprint.
ENVIRO’s commissioning management role supports the technical delivery of this transition, ensuring key mechanical systems are properly managed, tested and validated.
Results
ENVIRO provided structured mechanical commissioning management support across a major corporate office relocation project.
Through focused management of HVAC commissioning, domestic water testing, heat-load testing, ductwork cleaning and compliance-related activities, ENVIRO helped support the controlled delivery of critical building services packages for the new A&O Shearman headquarters.
The appointment provided MCS and the wider project team with specialist commissioning management support.
Systems Managed by ENVIRO
- LTHW
- CHW
- Critical CHW
- Ventilation
- CPC water treatment
- Domestic water commissioning
- Domestic water balancing
- Heat load testing of data rooms
Deliver Your Next Project with Confidence
ENVIRO provides specialist commissioning management and validation support for complex construction projects, helping teams manage risk, maintain compliance and keep progress moving.