Paul Taylor, 60, from Fareham, Hampshire has been found guilty of the murder of Sally McGrath.
The 22-year-old's body was was found in woodland near Peterborough in March 1980. Former soldier and builder Taylor, who is now 60, from Fareham in Hampshire had denied murder.
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A new flag of Northamptonshire has been raised at County Hall in Northampton this morning, the design chosen via a public vote.
Police Chief Constable Colette Paul has raised over £300 in memory of former colleague.
A misty start in places then a mainly sunny day with all parts expected to remain dry.