The names, addresses and photos of more than 8,000 nursery children have been stolen by hackers.
Kido, a nursery chain with 18 sites in London, one in Windsor and more in the US and India, is being held to ransom by cyber criminals.
The gang told the BBC that they also have information about the children’s parents, guardians and carers as well as safeguarding notes.
Hackers from the group, called Radiant, have contacted the parents to extort them for money.
Radiant published the details of 10 children on their website on the darknet, which can only be accessed with special software or permission.
The crooks told the BBC that they are not ‘asking for an enormous amount’ of money from the nursery chain.
They added that they ‘deserve some compensation for our pentest’, referring to a pe