Corporation Tax Ring Fence: Transfer Pricing: Transactions between companies
For accounting periods beginning on or after 1 April 2004 the transfer pricing rules at TIOPA10 Part 4 apply to all transactions between oil companies, regardless of whether they are UK-UK, cross-border or cross-ring fence other than those to which the CTA10\S280+ override applies (see OT21115).
For accounting periods ending before 1 April 2004, ICTA88\Sch28AA\para5(2) to (6) set aside the transfer pricing rules for UK:UK transactions. This UK:UK exception applied to transactions between a company carrying on ring fence activities and another company carrying on ring fence activities, except where the transaction was across the ring fence. Where the transaction was between companies but across the ring fence, the transfer pricing rules were applied by ICTA88\Sch28AA\para11(2), even if they were both UK companies.