Global infrastructure transformation for Willis Towers Watson

Willis Towers Watson embarked on a global IT transformation project to consolidate and migrate all internal and client data to common platforms.

About the project

Keysource has been working with Towers Watson for over 10 years as their European critical environment partner. In 2016, Towers Watson merged with international insurance provider, Willis Group. Following the merger, the business embarked on a global IT transformation project to consolidate and migrate all internal and client data to common platforms.

As the enlarged business’ data centre transformation partner, Keysource provided the initial consultancy and evaluation of Willis Towers Watson’s existing systems and requirements. The team also worked with WTW to understand their future strategy and requirements, and proposed a number of potential options.

Having recommended an option, Keysource was appointed to develop a framework for the business’ strategic upgrade of two UK data centres, which now needed to support 38 major European offices as well as smaller satellite offices.

There were a number of challenges the teams faced with this project. Extensive preparation was essential to addressing the logistical challenges presented by the brief.

A pre-planned communications schedule was created that included all meetings and milestones; this meant the project could be delivered without disruption to key business activities.

By ensuring clear points of contact for each aspect of the project from the outset meant that any emerging issues were discussed and resolved quickly.

The Challenge

Delivering the project in a live working environment added complexity. The existing facilities were still in use during the upgrade, meaning any downtime would have been detrimental to the business.

To avoid this, Keysource designed a programme of phased works, with contingency planning, which provided transparency over the risks associated with each phase, allowing works to be scheduled accordingly.

In addition, the data centres were located within Willis Towers Watson’s fully-operational Ipswich and Reigate office. This required Keysource to ensure construction did not disrupt the working environment of more than 1,000 employees in each building and, crucially, that all staff were safe in and around the construction site.

Working around the confines of the sites also proved challenging. The Ipswich site, a Grade I listed building, needed particularly careful management during the construction phase. One example involved removing three 25-tonne generators from the roof and replacing them with a new fit-for-purpose compound.


Additional 1.2 MW Added

Delivering an additional 1.2 MW of power to two existing data centres in Ipswich and Reigate to meet Willis Towers Watson’s need for increased capacity, improved resiliency and high security.

Power Resiliency

Upgrades to all critical power infrastructure to meet resiliency requirements.

Cooling Solution

Design and deployment of a new highly efficient cooling solution which allows flexible rack density.

Monitoring and Management

Installation of a comprehensive monitoring and management system to give WTW full visibility across their estate.

Keysource has provided us with excellent advice throughout the past six years, as we update our IT strategy we are confident that Keysource will continue this, supporting us to implement a best-in-class solution for the University.

Howard WhiteleyInterim Director of Digital Transformation, Staffordshire University

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