Thank you for visiting the CMSAS Limited website. Please note, we are NOT the Child Maintenance Service (CMS). If you need to contact the CMS, the number for an existing case with the CMS is 0800 171 2345 and for a new case is 0800 988 0988 or you can go to their website here: CMSAS Limited consultants are specialists in the Statutory Scheme of child support, as administered by the Child Maintenance Service. We would like to make you aware that we are not the Child Maintenance Service (CMS). We are a private company that provide a chargeable service of support, guidance and advice to both Receiving and Paying Parents, with Child Maintenance issues, assessments, appeals, tribunals and all Child Maintenance matters pertaining to the CMS (Child Maintenance Service) and/or HMCTS (Her Majesty’s Courts and Tribunals Service), including where difficulties develop with the CMS and/or HMCTS.


For specific guidance on your particular case, please contact your case adviser who will help you where possible, or direct you to the appropriate organisation.

The information on our website is considered correct at the time of writing. However, the child support and maintenance legislation is regularly updated and we endeavour to reflect these changes on our site as soon as possible.

Unless written permission has been given, the content of this website may not be copied or adapted or reproduced for display or publication in any manner.

Our website may contain links to other websites; CMSAS is exempt from any liability of any content within any listed website.

Conflict of Interest Policy

We are careful to identify any conflicts of interest as early as possible. Should a conflict of interest be recognised before, or at the point of purchase, the transaction will be declined or refunded prior to any discussion with our specialists.

If a conflict of interest is recognised during the initial consultation, we will manage it as follows:

  • Any communication with a client who is connected to an existing client will be suspended as soon as a conflict of interest is identified.
  • The directors of CMSAS Limited will be made aware of the details of the conflict of interest as soon as possible.
  • To ensure client confidentiality, all case notes of both parties will be immediately locked and will only be accessible by the directors.
  • The directors of CMSAS Limited will evaluate the details and confirm if it constitutes a Conflict of Interest. If it does, the directors will then:
    • Examine the feasibility that both parties would be agreeable to settling matters outside of CMS, and facilitate those discussions where possible. Costs would be charged to the most recent client unless both parties agree otherwise.
    • Inform the new client of the conflict of interest, thus stopping any further discussion. The purchase will be cancelled and the new client reimbursed in full.
  • All documents, details and any other information relevant to the cancelled purchase will be removed from our system.