Thank you for your question
My name is Clare
I shall do my best to help you but I need some further information first
Are you certain that the baby is yours?
When did you last see the child?
Are you actually still married?
You are entitled to apply to the Court for a Child Arrangement Order.
This is done using a Form C100 and paying the fee of £215
Within that application there will be an Order for a DNA test.
You clearly know how to use the DWP to achieve service and the matter will be moved to a Court close to her.
You will of course have to pay for the DNA test I am afraid.
Please ask if you need further details