Our Leadership

Find out more about our Global Leadership Team.

Will Swayne

Will Swayne

Global President | Carat

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Will is responsible for brand leadership, product and client development on a global basis. He is the driving force behind Carat’s purpose to redefine media and mission to create better business value through a command of media convergence.

Will has been at Carat for more than 15 years, which includes leadership roles in APAC, USA and EMEA. He has also been responsible for leading some of Dentsu Aegis Network’s largest clients.

Will has been named in Adweek’s prestigious list of “Media All-Stars” and also as an “Agency Innovator” by the Internationalist.

Euan Jarvie

Euan Jarvie

Global Chief Client Officer | Carat

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Euan is responsible for overseeing our key global accounts, as well as ensuring the agency has a clear, strategic vision that enables us to provide a different and better offering for our clients.

Euan previously held a number of senior roles at MediaCom, including Chief Operating Officer, EMEA and Chief Commercial Officer, Chief Client Officer (MediaCom USA). He was also the founder and Managing Director MediaCom Ireland & Scotland.

Euan is an avid skier, rugby coach, rock climber, sailor and novice fisherman.

Fiona Lloyd

Fiona Lloyd

Global Chief Marketing Officer | Carat

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Fiona works with the Carat global network to drive its development and ensure it is well equipped for the next stage of its growth.

Fiona has been with Carat since 2005, where she joined as Global Account Director, following eight years at WPP. She was a key part of the adidas Group global consolidation pitch in 2006 and went on to lead the Reebok business across EMEA, plus established a global hub for the client in Boston. As Dentsu Aegis Network’s relationship with the adidas Group diversified, Fiona spent a period of time in Isobar before moving into the role of Global Client President of the adidas Group business across Dentsu Aegis, led out of Carat. Fiona subsequently moved from Global into Carat UK where she led client development, before moving back into a global role as Network Development Officer.

Charlotte White

Charlotte White

Global Chief Strategy Officer (acting) | Carat

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Charlotte has over 20 years of industry experience at a global, regional and local level, including a 3 year spell in China. She has worked across a variety of sectors and brands, including MasterCard, Microsoft, Bacardi, Renault and Philips. Since joining Carat, Charlotte has led the global strategy for Mastercard and Beiersdorf.

Before Carat, Charlotte was at UM where she headed up Comms Planning for EMEA, developing central strategy for clients and also guiding local markets on strategy development.   In 2008 she was named a Global Innovator of the Year by the Internationalist magazine.

In her spare time, Charlotte enjoys spending time with her family and running marathons.

James Harris

James Harris

Global Chief Digital Officer | Carat

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James is Global Chief Digital Officer at Carat. James is responsible for leveraging and developing the digital capabilities of our network around the globe, and in turn driving digital business outcomes for our clients through innovation and data-led solutions.

James first joined Carat in 2000, working for Carat Interactive, where he worked to integrate digital into the mainstream media planning ecosystem. He progressed on to co-found the group’s specialist digital arm Diffiniti (now part of iProspect), building it up to be the leading digital specialist agency within the UK & Europe.

James moved on to become Chief Digital Officer at UM and then IPG Mediabrands.He was later appointed as AOL’s International Head of Agencies, where he helped develop the AOL culture, code story and vision. In 2015 James re-joined Carat as Global Chief Digital Officer.

James is also a speaker on everything digital as well as an author of several works including “Think More Analogue, Be More Digital”.

Stephen White

Stephen White

Global Head of Business Development | Carat

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Stephen ensures that we articulate our Redefining Media proposition and our ability to create better business value from media to help us attract new clients and extend our relationships with existing partners.

Business Development drives a substantial amount of Carat’s R&D, with many of the products and tools we use day in day out on clients being initiated during pitches.

Stephen began his work life at The Economist, which included three happy years working in Germany. Stephen enjoyed roles at Vizeum and Aegis Media, played a key role in the Post-Merger Office (following Dentsu’s acquisition of Aegis), before returning to Carat to run global business development and marketing. He is never happier that running a global pitch, bringing different countries together around a common goal. Despite being a passionate lover of London, he finds everywhere else is more interesting, which comes in handy in a global role.

Phil Christer

Phil Christer

Global Client President | Carat

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Phil is responsible for leading key Global clients at Carat, ensuring that we deliver first class strategic thinking and client service whilst driving innovation and growth within our client organisations.

Prior to joining Carat, Phil held senior roles at Google in both the UK and USA, primarily leading Global agency partnerships and building a Global network to service the agencies, increasing revenue across all Google products.

Phil is a huge sports fan, he enjoys running and surfing but especially football which he plays, coaches and watches far too much of!

Nick Sperrin

Nick Sperrin

Global Client President | Carat

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Nick is responsible for some of Carat’s global client relationships.

Nick has worked in international media for over 15 years, working for the likes of Publicis Group, BBJ and Dentsu Aegis Network. In that time, clients have included Volkswagen Group, Microsoft, The Walt Disney Company and Kellogg’s.

Whilst at Carat, Nick has worked for clients such as Kellogg’s, Philips and Diageo, overseeing over 64 countries, across 3 regions. Nick has also led a number of successful international pitches.

In his spare time, Nick enjoys running.

Sylvain Valeix

Sylvain Valeix

Global Client President | Carat

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Sylvain is responsible for key global client relationships within Carat. 

He has extensive experience in helping global blue-chip brands navigate the fast changing media landscape. Having worked both agency and client side, Sylvain brings a unique perspective on the role media can play in driving business outcomes.

Sylvain has worked at a broad range of agencies, receiving multiple awards for the work he has undertaken for clients during his 20+ year career. 

When not on a plane or travelling to a new destination, Sylvain enjoys spending time with his family, motorbikes and photography.