OT21023 - Corporation Tax Ring Fence: Interest Received by Ring Fence Companies
The guidance at BIM40800 onwards deals with the treatment of the interest and dividend income of a person carrying on a trade, profession or vocation. It explains the factors to take into account in deciding whether interest income should be taxed as a trade receipt (see BIM40805).
HMRC take the view that lending money at interest is not an integral part of oil exploitation and is not a ring fence activity but one step removed.