FK2 0AB HMYOI PolmontMain page of HMYOI PolmontHMYOI Polmont, Polmont, PrisonPolmont is Scotland's national holding facility for young people aged between 16 - 21 years of age. Sentences range from 6 months to Life. The average sentence length is between 2 - 4 years. History- Polmont first opened as a Borstal in 1911. Blairlodge https://www.sps.gov.uk/Corporate/Prisons/Polmont/HMP-YOI-Polmont.aspx