51.3 Without prejudice to Clause 53 (Insurance), Sub-hubco shall not be entitled to any payment which would not have been due under this Agreement but for Clause 51 (Excusing Causes) to the extent that Sub-hubco is or should be able to recover under any policy of insurance required to be maintained by Sub-hubco or any Sub-hubco Party in accordance with this Agreement (whether or not such insurance has in fact been effected or, if effected, has been vitiated as a result of any act or omission of Sub-hubco (or any Sub-hubco Party), including but not limited to non disclosure or under insurance) or any other policy of insurance which Sub-hubco has taken out and maintained.