how do I change the ownership in a Hungarian passport?

[JDH01]

I have recently bought a horse with a hungarian passport. I am fully aware of the need to register chsnge of ownership but as it is all in hungarian have no idea where to start. There is a loose form in the pasport which I presume should be used but unlike the main parts of the document there is no English translation. Would I be best to ring DEFRA? It is no use contacting previous owners as they have completed passpor but not sent it off. Horse and passport do match.
Thanks for any suggestions.

 

[SillySausage]

You could try BEF, they may know what to do or be able to do it for you?