She joins from BNY Mellon, the global investments company, where she was the global head of marketing & comms.
Before her time at BNY Mellon, Shelley was a manager at Accenture, where she developed communication strategies to support major IT outsourcing and transformation deals.
Her comms experience also takes in time at Lansons, as well a previous stint at H+K Strategies.
Shelley will be reporting to group MD Ben Curson, who praised her ‘ambition to deliver excellent client service.’
She has dealt with clients including American Express, Scottish Widows, Astra Zeneca and Ernst & Young.
McKenzie left for Lansons after seven years with the WPP agency.