There is no ‘right’ to contact with your child, but the law does say that it’s in the best interests of the child to have contact with both of their parents unless the it would be harmful to the child’s welfare.
Your child’s wishes and feelings are taken into account, but this depends on their age and other factors. If your ex-partner won’t agree to let you see your child, the Court can make a Child Arrangement Order. If you have not had contact with your child for a long time, the Court will probably order a gradual build-up of contact over a period of time.