Graham McCready has told waitress Amanda Bailey and the Unite union his private prosecution "will not be withdrawn in any circumstances."
Mr McCready, in an email forwarded to media overnight, warned Ms Bailey and Unite against advising or preventing any other witnesses from getting involved in his private prosecution.
He said he expected a district court Judge to decide who will have to give evidence under oath as to their knowledge of the "Key Pony Tail affair."
After 26-year-old Ms Bailey posted an anonymous blog post about the ponytail-pulling incidents that spanned several months, Mr Key made a public apology and said he was just "horsing around".
On Wednesday Mr McCready filed paperwork at the Auckland District Court. He proposed to charge the Prime Minister with "male assaults female" which carried a maximum penalty of two years in jail.
The serial litigant alleged Mr Key abused his power when engaging in ponytail-pulling with Ms Bailey, who worked at Rosie cafe in Parnell.
Mr McCready said other people could file their own private prosecution or complain to the Human Rights Commission if they wanted to take action.Blogger Martyn Bradbury said he wanted Ms Bailey to make a choice she was comfortable with.
He defended the decision to publish her story, telling TV One's Breakfast the 26 year-old had been the victim of "harassment" at work at the Prime Minister's hands.
He said The New Zealand Herald, not The Daily Blog, was to blame for Ms Bailey's identity being made public.
NZME.
