LAM14070 | Finance Act 2012 Transitional provisions: Assets held for purposes of long-term business: FA12/SCH17/PARA25-28
From HM Revenue & Customs · Life Assurance Manual
These transitional rules ensured that there were no tax consequences arising from the changes made in FA2012 to:
the allocation of chargeable assets between BLAGAB and non BLAGAB
the working of share pools where base costs were adjusted
These should not have any ongoing relevance to computations post 2013.