Royal pregnancy: Hoax call fools Duchess of Cambridge hospital
The hospital treating the pregnant Duchess of Cambridge says it "deeply regrets" giving information about her to hoax callers from a radio station.
Australian DJs posing as the Queen and Prince Charles got details from a nurse at King Edward VII hospital in central London.
The hospital said confidentiality was taken seriously and telephone protocols are under review.
2Day FM said it was surprised to be put through but "sincerely apologises".
Prince William and Catherine's sister Pippa and brother James visited her in hospital.
The prince has been a daily visitor since Catherine was admitted with acute morning sickness - hyperemesis gravidarum - on Monday.
A spokesman for William and Catherine said he would be making no comment on the hoax call.
Two presenters on the Sydney-based radio station are reported to have convinced staff they were the royals, were connected to the duchess's private nurse in the early hours of Tuesday morning and given an update on her condition.
Someone was also heard to be making barking sounds in the background to mimic what the presenters said were the Queen's corgis.
A hospital spokesman said: "This call was transferred through to a ward and a short conversation was held with one of the nursing staff. King Edward VII's Hospital deeply regrets this incident."
John Lofthouse, the hospital's chief executive, said: "This was a foolish prank call that we all deplore."
He later filmed a video message in which he stated the incident was "technically... a breach of patient confidentiality" although the information given to the hoaxers was "already in the public domain".