One does not tell the Hon. Judge overseeing family court "I am the head of a covert extra-national organization operating outside of the oversight of His Majesty's Government, and I have come to believe that the similarly unsupervised organization which has drafted my Grandson is up to no good, and should be prevented from having further access to him."

Particularly if trying to maintain the fiction that you are simply a retired well to do member of the gentry.