2  Warranty

2.1  The Sub-Contractor warrants to the Authority that it has complied with and fulfilled and shall continue to comply with and fulfil all of its duties and obligations expressed in, or arising out of, the Sub-Contract.

2.2  The Sub-Contractor agrees that it will not amend the terms and conditions of the Sub-Contract without the prior written approval of the Authority (not to be unreasonably withheld).

2.3  Notwithstanding anything in this Agreement and notwithstanding any payments which may be made by the Authority to the Sub-Contractor, the Authority and the Sub-Contractor will not be under any obligation to each other nor will any party have any claim or cause of action against the others unless and until the Authority has given written notice to the Sub-Contractor pursuant to clause 5.3 or clause 5.7 of this Agreement.