James has been involved in fandom and conventions since the early 1990s. He has helped organise many conventions in Ireland and abroad, including Octocon, P-Con, Shamrokon (Eurocon), Eastercons and Worldcons. He has also been involved in fanzines, fan clubs and fan funds. He is also a fan of LEGO and will attempt to include it in convention programmes at every opportunity.

Vanessa has a long track record of convention running, including Loncon 3, Worldcon 75,  Dublin 2019 and many other conventions on both sides of the pond. She wears two hats for Concentric. She is both Co-Chair and Hotel Liaison. She often wonders if she knows how to say 'no'.

John has a long history of convention running. He was treasurer for Loncon 3, the 2014 Worldcon and also was treasurer of the most recently previous Birmingham Eastercon, Innominate, in 2017.