BLM80105 | Sale of lessor companies and similar arrangements: business of leasing plant or machinery: identifying transactions that are affected
From HM Revenue & Customs · Business Leasing Manual
In most cases it will be immediately apparent that a company is a lessor company and that it has changed hands. Typically the company owns only assets that are leased out to others and it is a 100% subsidiary sold outright. However, the legislation is designed to deal with more complex structures such as partnerships and consortia and prevents groups from arranging their affairs to exploit alternative methods of ensuring that losses of the leasing business are tax effective while profits fall out of tax.
To decide whether a transaction is caught by the sale of lessor company legislation you need to answer two questions: