Within prison there are rules that must be followed, when a prisoner is alleged to have broken those rules, they receive an adjudication. This is initially in front of the Prison Governor and the prisoner must represent themselves.
However, if the rule broken is deemed to be of a more serious nature then the Governor can determine to refer the matter to an Independent Adjudicator. This is a District Judge who attends the prison once or twice a month.
If this occurs then a prisoner can instruct a solicitor as the final outcome may impact on liberty. As the Adjudicator can add up to an additional 42 extra days onto a sentence for each charge.