Beverley Hart, deputy managing director of The Union is to leave the agency after 13 years to join Tayburn.
Hart, who was promoted from account director to her current role in 2008 during a senior management restructure, is set to join design agency Tayburn, thought to be in a client services role.
Ian McAteer, managing director of The Union confirmed that Hart had resigned but added that she may not be expected to work the whole of her six-month notice period.
McAteer said: “I’ll miss Beverley as she’s been of great support to me in working alongside but she needs a new and fresh challenge and we wish her well.”
At the time of writing, Simon Farrell, managing director at Tayburn was unavailable for comment.