Gillian Costelloe

Gillian Costelloe – Commercial & Partnerships Director
With over 20 years in luxury travel and tourism, Gillian leads By Appointment DMC’s global partnerships and commercial strategy. She holds a master’s in international Tourism from the University of Limerick and has worked with Ireland’s top DMCs before joining By Appointment DMC to spearhead its expansion across Ireland, the UK, and France. A passionate traveller and industry innovator, Gillian is dedicated to creating unique, high-value experiences and forging strong relationships with travel partners worldwide.