Wilkinson was a board director at Zibrant, overseeing and leading the development of pharmaceutical accounts and delivery of the Healthcare Meetings Forum.
Wilkinson will join the board of Grass Roots Meetings & Events and divide her time between the Putney, Marlow, Fleet and Worcester offices, in addition to working with the wider Grass Roots Group teams overseas.
This appointment follows a series of major appointments at the Grass Roots Group, which is part of the agency’s aim to attract the most talented industry individuals.
Des Mclaughlin, group managing director for Grass Roots Meetings & Events, said: "Hannah is very highly regarded by all who have worked with her and has a proven record of success in everything she has done.
"She will play a pivotal role in bringing our Account teams together and helping to cement our meetings and events business as one, in line with our plans. We always want to recruit the best in our industry and Hannah’s appointment fully reflects this."