Commercial Office Fit Out - Levels 5 & 6, 40 Leadenhall

Client: Main Contractor

Size: Approximately 80,000sqft

Appointment: Contractor- Side Commissioning (CxC)

Project Overview
This project delivered a high-specification CAT B office fit-out across two floors, totalling approximately 80,000 sq. ft. The design included open-plan office areas, collaboration and breakout zones, focus and internal meeting rooms, client meeting suites, a broker lounge, and IDF & MDF technical rooms. The floors were linked by an interconnecting staircase, enhancing connectivity and flow.

Sygna was appointed on behalf of the main contractor to deliver comprehensive MEP commissioning management, ensuring all mechanical, electrical, and plumbing systems were tested, optimised, and fully operational in line with client requirements and industry standards.

“Both the commissioning managers were very good. They integrated well into our team, had good communication, the transparency was excellent – no complaints!”

Commissioning Services Delivered

• Our approach supported the client and contractor at every stage, providing transparency, technical confidence, and timely delivery:

  • Management, Witnessing, and Close-Out of MEP Commissioning Activities: We oversaw all mechanical, and electrical commissioning on site, ensuring systems were fully tested, operational, and compliant with design intent. The client experienced hands-on support throughout, with our commissioning managers fully integrated into their team.

  • Reviewing and Tracking Test Documentation: All commissioning test documents were reviewed and tracked to meet required standards and programme deadlines, providing the client with assurance that every stage of commissioning was documented and on schedule.

  • Liaison with Client, Base Build, and Construction Teams: We coordinated closely with all stakeholders to enable seamless certification, witnessing, and approvals, ensuring the client never had to chase updates.

  • Development of Project-Specific Commissioning Plans, Procedures, Trackers, Programmes, and Tools: Tailored tools and procedures were created to guide the project from day one to completion, giving the client a clear, transparent view of progress at all times.

  • Management of Commissioning Issues and Resolutions: Any issues identified during commissioning were proactively managed and resolved, keeping the project on programme and avoiding delays for the client.

  • Provision of Detailed C&E / Final Stage Commissioning Scripts: Comprehensive commissioning scripts were delivered to support final system verification and handover, ensuring the client could operate the facility confidently from day one.

Sygna’s Added Value

• Early engagement and commissioning planning set a benchmark for project execution.

• Weekly and daily progress reporting provided full visibility, reducing risk and enhancing decision-making.

• Proactive issue management with contractors enabled fast resolution and minimal disruption.

The contractor valued our structured approach:

• Day 1 Commissioning Plan: Comprehensive, colour-coded, and up-to-date schedules set the standard for the project. The client noted they could refer to the plan weekly without ever needing to ask for updates.

• Resource Reliability: The client reported that the team was always present and responsive, providing reassurance that all commissioning milestones would be met.

• Problem-Solving Collaboration: From working with consultants to managing specialist contractors, our team supported the client in resolving issues without disruption, demonstrating strong collaboration and judgement.

The feedback from our client indicated that our delivery facilitated the delivery of a fully commissioned, operational office space on time and to specification, with:

• All MEP systems verified, optimised, and operational.

• The client is fully trained and confident in operating building systems.

• High transparency, minimal disruption, and complete satisfaction with programme, communication, and issue resolution.

“The trackers and reports were excellent - lots of information, colour-coded, and easy to refer back to.”

Important Outcomes:

• Transparency is critical: Live tracking and reporting give the client confidence and peace of mind.

• Integration matters: Embedding the commissioning team within the client’s team improves collaboration and speeds issue resolution.

• Planning sets the tone: Clear day 1 schedules, colour-coded trackers, and structured commissioning plans ensure smooth execution.

• Technical support enhances confidence: Specialist Cx expertise is valued at every stage.