I am posting for a friend but will write in the first person for ease!
Ex H and I have a fixed contact order for dc due to his behaviour involving the dc - not returning, abducting etc etc
He self represented in court to ask for daily contact and made a fool of himself and stormed out during procedings when the judge said no
.
He has contact every wed eve and alternate Sundays. He constantly returns them late, police have been ineffective despite once collecting them from a social club at 10.30pm at night, he was drunk and they are primary school aged 
The only way forward seems to be to get a power of arrest attached to the contact order. I want to self represent.
Any help advice etc on how to go about it, court fees and how long it will take?
TIA