The Account Holders may not assign any of their rights under this Agreement or in relation to the Account otherwise than pursuant to the Security Documents or as permitted under the Design Build Finance and Maintain Agreement. The Security Trustee may assign its rights under this Agreement to a successor Security Trustee appointed in accordance with the Security Trust and Intercreditor Deed and shall promptly give notice of any such assignation to the Account Bank. The Account Bank shall not be entitled to novate (except in accordance with Clause 8.7 above) or assign all or any part of its rights under this Agreement.