JURORS in the Lydia Bishop trial have seen CCTV footage allegedly showing children playing unsupervised on two occasions on the slide on the day the youngster was fatally injured.

They have also seen footage of a rope lying on the mound topped by the slide on six occasions between 8.05am and 9.06am, on September 17, 2012.

PC Nicola Dunn told the jury she had viewed 12 continuous hours of footage from two cameras overlooking the York College nursery’s playground starting at 7.59am. The first time she saw an adult in the playground was at 9.25am.

Asked by the prosecution whether she had seen anyone “interacting” with the rope, PC Dunn said she had not.

Later that day, three-year-old Lydia died when she was strangled by a rope while playing unsupervised on the slide.

The jury has heard the nursery had health and safety rules that children should always be supervised when playing on the slide or with ropes and that ropes should be tidied away after use.

York College, in Sim Balk Lane, denies failure to ensure the health and safety of children at the nursery between August 1 and September 18, 2012.

One of the nursery staff, Sophee Redhead, denies manslaughter through gross negligence of Lydia.

Under cross-examination, PC Dunn said she had seen on the CCTV footage Lydia playing on the slide at 10.50am, leaving the slide and returning to the slide area at 10.54am, and that she had seen a boy on the slide at 11.25am and him being escorted by a member of staff one and a half minutes later away from the slide.

The jury has heard Lydia was found lying without breathing on the slide shortly before 2.30pm with a rope around her neck.

They have also heard details of efforts made by the staff to resuscitate her, of ambulance paramedics arriving at 2.39pm on a priority one call-out and using 100 per cent oxygen, among other methods, to help her as they rushed her to York Hospital where a full hospital resuscitation team met her, and of continued treatment by medical staff including an accident and emergency consultant until 3.27pm when she was declared dead.

David Yearley, head of play safety for the Royal Society for the Prevention of Accidents, called as a prosecution expert, said he rated the risk of harm from the rope higher than that given in the college’s risk assessment.

He said the control measures laid out in the assessment would have protected the children against the risk if they had been carried out in full.

He also said that if either the children had been supervised at all times or the rope put away when not being used under supervision, that would also have protected the children.

• The trial continues.