Thanks everyone for you replies, will take a while to investigate it all. More help than I expected for which I am great full. The DNA test was here as we both send samples direct to a lab I chose. I will get the UK passport for my son sorted out as a priority. I know the mother will be gicing a lot of time and i will of course take account of that (lost income etc). I know little about Phill just what I have read.
Health is my priority as I do not know what is freely available in Phill & guess it is a lot different to the uk in regards to immediate help and emergency services. I will try and sort any documentation out asap just in case there are any time limits.

Does anyone know if there are any benefits to both of them visiting the UK and registering with the NHS/GP or registering with anything else here?