s 41 Special custody in hospital
Where from the gravity of the offence for which a prisoner may be in custody or for any other reason, the Officer in Charge considers it desirable to take special measures for the security of a prisoner while under treatment in a hospital, the Officer in Charge may, in the event of there being no prison officer available, place the prisoner into the charge of two or more fit and proper persons, one of whom shall be with the prisoner at all times— (a) who shall be vested with full power and authority to do all things necessary to prevent the prisoner from escaping; and (b) who shall be answerable for the safe custody of the prisoner— (i) until such time as the prisoner is handed over to a prison officer on his discharge from the hospital; or (ii) until such time as the term of imprisonment of the prisoner expires, whichever may first occur.