Hiya everyone looking for some advice really. I have a 3yr old son and we live in the UK and are both British born. My ex partner is american and moved back there when my son was 6months old. He rarely pays child support so I filed in the end. When he heard this he threatened to file custody papers now I'm wondering how he would do this and if anyone knows what would happen? My son knows nothing about his father as my ex couldn't be bothered to call even though for a year I asked every week if he would call our son but he choose not to. I still send him regular pictures and updates. Any advice would be appreciated.