A couple have been arrested on suspicion of trying to abduct a premature baby at Great Ormond Street Hospital.The couple, a 31-year-old man and a 25-year-old woman, entered the the world-renowned hospital in Camden, north London, on Monday afternoon.They told staff that their child had been born at 21 weeks at the Royal London Hospital in nearby Whitechapel, about four miles from Great Ormond Street Hospital, on March 1.They showed staff a photo of “their baby” in an incubator – believed to be a printout from the internet – and said they had come to collect their child from the neonatal unit.Staff checked with managers at the Royal London Hospital for premature babies being born on March 1, but found no records and alerted the police.A police source said the photo shown by the couple had been “screen-grabbed and printed from the web”. It is not yet known if it was an image of a baby being treated in Great Ormond Street. Officers arrived at the scene and arrested the couple on suspicion of conspiracy to abduct a child.The couple have now been released on bail on the condition that they should not enter any hospital – unless they are suffering a “medical emergency”.Inspector Paul Clarke, of the Met Police, said: “The actions of the staff at Great Ormond Street Hospital in making all of the necessary checks and the quick response of police in arresting a couple prevented what could have been a very frightening and harrowing incident.” A spokeswoman for Great Ormond Street Hospital said: “Thankfully, this type of incident is exceptionally rare.”We are pleased that staff at the hospital acted so swiftly and calmly to ensure the safety of all our patients.”A Met Police spokesman said: “We were called at approximately 1400hrs on Monday, 6 March by staff at Great Ormond Street Hospital following a report of an attempted abduction.”Officers attended and arrested a 31-year-old man and a 25-year-old woman on suspicion of conspiracy to commit child abduction. “They were taken to a central London police station and have since been bailed to a date in mid-April. Enquiries continue.” The incident comes a year after the Royal London Hospital was instructed to improve tighten security on its maternity ward, following an inspection by the health watchdog. The Care Quality Commission revealed that some newborn babies at the east London hospital had no name tags, and that staff had demonstrated a “lax” approach to checking them.Inspectors also found that senior member of staff were unaware of the baby abduction policy and there were not enough midwives to provide safe cover.Following the report last year, the trust in charge of the hospital, Barts Health, said it had introduced new policies to resolve security issues. Police praised the response of nurses at Great Ormond Street Credit:AP Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily Front Page newsletter and new audio briefings.