NHS Direct originally won 11 of the 46 contracts to provide the 111 service.
Earlier this month the company announced that it would be unable to provide the service in North Essex and Cornwall.
But now it is also planning to stop providing the service in Somerset, Buckinghamshire, east London and the City, south-east London, Sutton and Merton, West Midlands, Lancashire and Cumbria, Greater Manchester, Merseyside and Cheshire.
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Scotland Yard said the male youths will appear in custody at Westminster Magistrates' Court on Saturday.
Windy this weekend with gales across northwestern parts of the UK. Rain spreading southeast.
Greater Manchester Police said "inquiries are ongoing to fully understand the circumstances of the incident."