The former deputy prime minister John Prescott has urged the Home Secretary to investigate allegations that a security firm used unpaid jobseekers to steward the Queen's Diamond Jubilee.
A report in The Guardian alleges that Close Protection UK (CPUK) asked stewards - who included up to 30 jobseekers and another 50 people on apprentice wages - to sleep under London Bridge before working a 14-hour shift.
Mr Prescott wrote in a letter to Theresa May that CPUK showed a "blatant disregard for the care of its workers". He said the allegations raise "very serious questions" about the "suitability of using private security contractors to do frontline policing."
More top news
It comes after security was stepped up around the country following the Manchester Arena attack which killed 22 people.
The distress signal sparked a police hunt in the area to find the person or group who made it.
The seven-month-old baby girl is believed to have been left in a car in Co Tipperary for several hours.