Close company
From ACT Wiki
1. Companies - governance.
Any company controlled by a small group of people, or a small group of other companies.
2. UK tax - participators.
A company controlled directly or indirectly by five or fewer participators.
3. UK tax - directors.
A company controlled entirely by participators who are all directors of the company.
4. Tax - other jurisdictions.
Similar ownership and governance structures in other jurisdictions.