If your looking to get in touch with the Working Tax Credits team, then this is the direct number: 0843 850 2102.
You can call them on this number to deal with all Working Tax Credits enquiries, for new and existing claims call the customer services team direct.
This number 0843 850 2102 will get you straight through to the correct team.
We are however in no way connected or affiliated with the Government. Direct-number.co.uk is a directory service, and calls to this number cost 5p per minute from a BT landline, calls from mobiles be more.