SolvedETASSUM47140 | Schedule 4 Company Share Option Plan (CSOP): Supplementary and defined terms: Associated company
From HM Revenue & Customs · Employee Tax Advantaged Share Scheme User Manual
Paragraph 35 provides the definition of what constitutes an associated company for the purposes of the CSOP code. A company is an associated company of another company if at a particular time, or within the previous 12 months, one has control of the other, or both are under the control of the same person or persons. For the purposes of paragraph 35 the question of whether a person controls a company is to be determined in accordance with sections 450 and 451 CTA 2010.