CTM60200 | Close companies: tests: control - of a company
From HM Revenue & Customs · Company Taxation Manual
Having determined who is a participator in the company and having ascertained the rights and powers which the participator possesses (or is entitled to acquire or secure) and has attributed to them under CTM60140 to CTM60170, it is necessary, in order to establish that the company is a close company, to show that it is controlled by:
five or fewer participators, or
participators who are directors,