OT21017 - Corporation Tax Ring Fence: Definitions of Ring Fence Income and Ring Fence Profits
CTA10\S275, CTA10\S276
CTA10\S275 defines ring fence income as income arising from oil extraction activities or oil rights.
CTA10\S276 defines ring fence profits as ring fence income plus the aggregate gain, if any, computed in accordance with TCGA92\S197(3).