My ex has not had anything to do with our little boy since shortly after his birth, he is now 5 and does not even know his father exists.
My ex signed a letter in 2012 relinquishing his parental responsibility - saying that he did not want any input to our son's life.
Although the document was not witnessed or undertaken under legal guidance, can I use this as evidence to remove my his surname from my son's name through dead poll or do i need to chase him down for him to fill out the paperwork?