Almost 30,000 customers were overcharged between 2012 and 2018.
He appeared in the Auckland District Court on Thursday.
They've been granted name suppression as the trial begins.
The UK men face fraud charges totalling more than $20,000.
The pair could each face 20 years in prison if they're found guilty.
The man was meant to appear at Auckland District Court on Tuesday.
"We want to know. We have a right to know."
"We want to be tried by the proper processes of justice."
It's part of a crackdown on rising crime in the area.
The Ministry of Health had suggested he should stay in custody for up to a week.
Human remains were taken from Body Worlds Vital in Auckland.
The activist says stress over the forced sale of her home has made her sick.
Former high-ranking military official Alfred Keating lost name suppression this morning.
The 60yo broke her back after the catamaran slammed into a wave in the Bay of Islands.
Heather Bills died in hospital after being administered insulin by an unknown person.
Lynn Abraham maintains she only touched or moved the children's hands.
Lynn Abraham is accused of taping over a child's mouth, force-feeding and smacking children.