SolvedOT30105 | Capital Gains: Drilling Expenditure - Part Disposal of Licence
From HM Revenue & Customs · Oil Taxation Manual
TCGA92\S195(7)
TCGA92\S195(7) provides that on a part disposal of a licence, any expenditure qualifying for a deduction under S195 is attributed wholly to the part disposed of. It is not apportioned under the normal rules at TCGA92\S42 between the part disposed of and the part retained.