The illegal drug spice has been flooding UK prisons for years, #UntoldC4 reveals just how bad the problem is with footage from inside the UK’s prisons filmed by prisoners on mobiles they’re not supposed to have. Watch #UntoldC4: The Secrets of UK Prisons on @Channel 4 or watch on Channel 4 Documentaries YouTube. #prisontok #jailtok #prison #prison inmate tiktok #documentary #documentaryclips #spice