He added: We were also very concerned for the security and safety of our son.

Looking back on it now, such behavior on their part is utterly vile.

Prince Harry arrived at the High Court in London to give evidence on Monday morning.

Prince Harry

Prince HarryKarwai Tang/WireImage

This is a civil case rather than a criminal case.

Prince Harry is the first senior royal to be cross-examined in court since the 19th century.

Prince Harrys testimony continues today and tomorrow.

WGA West building in Hollywood