CFM98500 - Interest restriction: administration: reporting requirements: obligation to inform group members
TIOPA10/SCH7A/PARA6
When a reporting company is appointed, by whatever mechanism, it must inform all companies that were UK group companies for all or a part of the period of account of its appointment (TIOPA10/SCH7A/PARA6). This should be done as soon as reasonably possible after its appointment. The ultimate parent should also be informed if it is not itself a UK group company. The duty to comply is enforceable by each company that should be notified, rather than by HMRC.