Related Clues:

• Parolee, for instance
• One having cooler experience after leaving the Tory Party?
• Old lag
• He was in prison many years - about ninety
• Lord Archer's one on two counts
• Former prisoner
• One now liberated as political defector?
• I've now finished sentence with period -- put X against comma initially inserted
• Old lag with trousers on, as Spooner might have put it?
• Old fool -- one whose time is over
• I've spent my time working with former head of classics
• Prisoner who was 90 kept in a very long time
• Former jailbird
• Halfway house resident
• Old time-server is political turncoat perhaps