BIM60465 | Transactions in land: Definitions: Disposal
From HM Revenue & Customs · Business Income Manual
, S816 Corporation Tax Act 2010A disposal takes place not only when the land is sold but also when control over the land is disposed of.
For example, a disposal of a majority shareholding in a land owning company is a disposal of land for the purposes of the transactions in land rules.
The sale of a minority shareholding in a company is not normally a disposal for these purposes unless it can be shown that minority shareholders were acting in concert.