The red node is Mary. Pale nodes are charities, grey nodes are companies, and darker grey nodes are the people who sit on them. Sign in free to explore further.
Person Preview
Mary Cliona O'Sullivan
Mary Cliona O'Sullivan is a director of The White House Practice Limited. Source: Companies House records.
Director at The White House Practice Limited
- 1 current role
- 2 previous roles
- Served alongside 61 people
Mary's network: 61 people across 3 organisations
Anyone can join - you don't need to be on the register. Used by researchers, journalists, recruiters and due diligence teams.
Private by default - we never tell anyone you looked them up. Viewing, searching, saving and shortlisting are private; people only hear from you if you choose to send them a message.
Official record Companies House · updated 4th October 2026 · Free, no card or password
Current roles
3 roles across 3 organisations-
The White House Practice LimitedDirector · 2012-present
Official record ยท Companies House
- Source
- Companies House
- Organisation
- The White House Practice Limited
- Role
- Director
- Appointed
- 2012-08-29
- Record reference
- Company 07198610
Current
2 more roles, including 2 previous roles, with dates and sources
Sign in free to see all rolesPeople Mary has served alongside
61 people across 3 organisationsBased on overlapping official board records. Calculated from official records
61 people across 3 organisations
Create a free account to reveal this governance network and see how you're connected.
Create a free account to revealConnections
Connection map
The organisations and people around Mary, shown in full after you sign in.
How are you connected?
Create a free account to see the recorded route between you and Mary, if there is one.
Create a free account to checkSources
- Companies House
- Officer appointments and resignations.
- Edition
- Register edition compiled 4th October 2026
- Identity
- Records are treated as the same person only where the evidence confirms it. How people are matched