Once released, those serving an IPP sentence are subject to an indefinite licence and can be recalled for minor breaches, such as missed appointments.
The Justice Committee inquiry will explore legislative and policy options for reducing the number of IPP prisoners, and is seeking evidence by 26 October on their experiences and on the barriers preventing release, reasons for recall and support made available.
Justice Committee chair Sir Robert Neill said: ‘The large numbers of people being recalled to prison under IPP suggests there is no end in sight to the problems created by this flawed sentence.’