Armed with old files, new technology and tireless detective work, a small West Midlands team has solved more than 240 cold cases. They tell Harriette Boucher why they refuse to give up on the missing

With a child reported missing every 2.5 minutes in the UK, it is vital to address the cause behind their disappearance. As part of our SafeCall campaign, The Independent looks at what crucial next steps are taken to ensure vulnerable children do not go missing again