Child Maintenance Service
Contact the Child Maintenance Service
You can contact the Child Maintenance Service through your online account.
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.
Helpline opening times over Christmas and New Year
| Date | Opening times |
|---|---|
| Monday 22 December 2025 | Open 8am to 6pm |
| Tuesday 23 December 2025 | Open 8am to 6pm |
| Wednesday 24 December 2025 | Closed |
| Thursday 25 December 2025 | Closed |
| Friday 26 December 2025 | Closed |
| Monday 29 December 2025 | Open 8am to 6pm |
| Tuesday 30 December 2025 | Open 8am to 6pm |
| Wednesday 31 December 2025 | Open 8am to 5pm |
| Thursday 1 January 2026 | Closed |
| Friday 2 January 2026 | Open 8am to 6pm (closed in Scotland) |
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