A CCP shall distinguish in accounts the assets and positions held for the account of CCPs with whom it has entered into an interoperability arrangement.

If a CCP that enters into an interoperability arrangement with another CCP only provides initial margins to that CCP under a security financial collateral arrangement, the receiving CCP shall have no right of use over the margins provided by the other CCP.

Collateral received in the form of financial instruments shall be deposited with operators of securities settlement systems F1that are designated systems within the meaning given in regulation 2(1) of the Financial Markets and Insolvency (Settlement Finality) Regulations 1999.

The assets referred to in paragraphs 1 and 2 shall be available to the receiving CCP only in case of default of the CCP which has provided the collateral in the context of an interoperability arrangement.

In case of default of the CCP which has received the collateral in the context of an interoperability arrangement, the collateral referred to in paragraphs 1 and 2 shall be readily returned to the providing CCP.