Guest Stars Phoebe Dynevor as Lauren Harry McEntire as Matt David Bradley as Frank Tom Tunstall as Visits Hall Guard Adrian Rawlins as Ian Enzo Cilenti as Mick Nicola Walker as DCI Fontaine Anne Reid as Margaret Callum Lambert as Jack Allan Hopwood as Prison Gang Leader Rebecca Grant as Shaheen Emma Matthews as Vicky Juliet Ellis as POPS Worker Tony Pritchard as Governor Gary Overton as Stan Stuart Wolfenden as Liam Owen Roe as Brendan Osi Okerafor as Ben Annie Lovett as Kayleigh David Westbrook as Headteacher Chris Overton as Blake David Annen as Dr. Delamere