The original signatories of the Memorandum and Articles of Association were:
George Graham, Christine Doherty, Sean Nelson, Patrick Kerr, Moore Blair, Hilda Stewart, Christine Keenan, Sheldon Murray, Brian McGookin, Jim McNally and Joe McErlean.
The current Board of Directors consists of the following, in no particular order:
George Graham (Chairperson), William Allen (Treasurer), Eileen Ingram (Secretary), Brian McGookin, Moore Blair, Christine Butler, Sheelagh Hillan, Helen Boyd, Martin Hackett, Peter Boyle and Liam Hurrell.
The staff at ARCHES currently includes Hannah Moloney (Operations Manager), Sinéad McIvor (Training & Media Administrator), Owen McClurkin (Office Support Assistant), Ergnat McLaughlin (Caretaker), Ann McGuinness (Project Manager), and Mary Robb (Cleaner).