Where are you getting 9am from
@WiseOwl? Was it another source? Just glancing at the review document, which confirms that JM reported at the Bucks probation office as scheduled on 15/2/19 but it doesn't say what time.
If it really was at 9am, then there's a limit, I think, to how far away the prison he was released from could have been.
If he was a Cat A prisoner, then apart from Woodhill the only others even remotely in striking distance are Whitemoor in Cambs and Long Lartin in Worcs. But he may not have been a Cat A prisoner by the time of his release. I'll read the review properly later and see if it sheds any light. Thank you for posting it.