I need to track down my father ?

If all else fails, 192.com,friends,facebook,etc. Try the salvation army. They found my grandfather who had gone missing in the 1950 s They have a specialist missing persons team and they do not charge. If they do find him they will not give you details unless he gives his permission. However even if he does not want to be" found" they will at least inform you he is still alive and you may have to try an alternative method.