Crozier v Crozier is authority that while the parties can achieve a clean break between themselves, they cannot do so in respect of their child, see Q&A: Where parties agree a clean break upon divorce, what is the position with regard to child maintenance, and will that continue to be paid?. In addition, it is not possible to contract out of the right to seek financial provision for the benefit of a child, whether from the court, or from the child maintenance service (CMS), as any agreement or term of an agreement which purports to restrict the right of any person to apply to the CMS for a maintenance calculation is void under