One of the Australian DJs who made a prank call to the hospital where a pregnant Kate Middleton was being treated is attending the inquest of a nurse whose death has been linked to the hoax.
Mel Greig is not due to give evidence but said in a tweet she was prepared to answer questions "on or off the stand".
Jacintha Saldanha (46) was found dead in hospital accommodation shortly after staff were tricked into revealing details of Kate's stay at London's King Edward VII Hospital in December 2012.
She was being treated for acute morning sickness at the time.
Miss Greig tweeted "I made a commitment to the Saldanha family that I would answer any questions they have, on or off the stand, I'm here to uphold that promise."
I made a commitment to the Saldanha family that I would answer any questions they have, on or off the stand, I'm here to uphold that promise
— Mel Greig (@MelGreigRadio) September 11, 2014
She has previously spoken of the backlash she received in the months following the death of the mother of two, including death threats.
The family of Mrs Saldanha, including her widower Benedict Barboza and her two teenage children Lisha and Junal, went to the Royal Courts of Justice in London to attend the first day of the hearing.
Mrs Saldanha was the first nurse to answer a call by Australian DJs Greig and Michael Christian, who pretended to be the Queen and Prince Philip for an on-air prank.
She passed them on to a second nurse on Kate's ward, who was duped into giving out details of her medical condition. Mrs Saldanha was found dead three days later on December 7th.
MP Keith Vaz, who has acted as a spokesman for the family, said they have faced a "long road" for the inquest following repeated delays.
"This inquest will finally take place after a wait of over 21 months,"' he said.
"It is has been a long road for the family and I deeply admire the patience, humility and dignity they have shown throughout this traumatic time. It is right that they finally gain closure."
The inquest is expected to last two days.
