Davies will be responsible for the execution of LBi's global strategy and service offering.
He said: "I am very excited to be taking on this challenge. We are now entering the next era of digital where the relationships that companies and brands have with their customers is fundamentally changing.
"The agencies that support that change must themselves adapt.
"With the strength of talent and service and the tools that we have developed at LBi, we are in a unique position to offer our clients the support necessary to compete in this new environment.
"I have had the pleasure of working alongside the current management for many years and now, as part of the leadership team, I look forward to helping drive the business forward."
Davies has worked at for more than eight years.
Luke Taylor, LBi chief executive, said: "Alan has been at the forefront of our most important strategic client relationships for many years and with his consulting insight is uniquely positioned to drive forward our services to support large, international brands.
"Having worked alongside all of our international offices and enjoying their deep respect, Alan is ideally placed to both mentor and embed a greater degree of sophistication around the use of IP and data in the transformation of our strategic services.
"Specifically, our data platform has the ability to transform the nature of our engagement with clients and Alan will be key in driving this forward throughout the organization."
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