England & Wales runs one nationally named scheme – Incentives and Earned Privileges (IEP) – with set levels (Basic, Standard, Enhanced) that every prisoner moves through depending on behaviour.
Scotland doesn’t have one single national scheme like that. Instead, each prison runs its own local incentive and privilege arrangements, within the framework of the Prisons and Young Offenders Institutions (Scotland) Rules 2011. These usually cover things like extra visits, association time, access to personal property, and spending limits – linked to behaviour and how engaged someone is with their sentence plan.
Because things can vary a bit between prisons, the best person to ask exactly how it works at a specific prison is the prisoner’s own Personal Officer, or you can check the induction information given when they first arrive.