Four gang members have been jailed and a missing child rescued after police rumbled a major drugs line from London to Dundee.
Officers from the Met Police launched a probe after concerns were raised for the welfare of the 16-year-old on November 14 last year.
Detectives discovered the youth, from Croydon, had travelled north of the border earlier that month - closely followed by Malik Paul, 26, Michael Nwadire, 28, Dylan Newman, 21, and Ellis Davey, 22.
