Practical Law UK Glossary 2-107-7337 (Approx. 3 pages)
Glossary
Subsidiary
A company which is controlled by another company. For the purposes of the Companies Acts, whether or not a company (S) is a subsidiary of another company (H) (its holding company), depends on whether any one of the following tests are met:
H holds a majority of the voting rights in S.
H is a member of S and has the right to appoint or remove a majority of its board of directors.
H is a member of S and controls alone, under an agreement with other members, a majority of the voting rights.
S is a subsidiary of a company that is itself a subsidiary of H.