Child Maintenance Service
Contact the Child Maintenance Service
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If you already have a Child Maintenance Service case you can use your online account to report changes to your circumstances.
Call the Child Maintenance Service
Child Maintenance Service
Telephone: 0800 171 2345
Welsh language: 0800 232 1979
Relay UK (if you cannot hear or speak on the phone): 18001 then 0800 171 2345
British Sign Language (BSL) video relay service if you’re on a computer - find out how to use the service on mobile or tablet
Monday to Friday, 8am to 6pm
Find out about call charges
There’s a different phone number if you live in Northern Ireland.
Contact the Child Maintenance Service by post
You can also write to the Child Maintenance Service.
Child Maintenance Service (England, Scotland, Wales cases)
Child Maintenance Service 21
Mail Handling Site A
Wolverhampton
WV98 2BU
Child Maintenance Service (Northern Ireland cases)
Child Maintenance Service 24
Mail Handling Site A
Wolverhampton
WV98 2BU