Vicky Pryce, 60, emerged from East Sutton Park Prison near Maidstone, Kent, via a back exit.
The mother-of-five was driven away with her lawyer Robert Brown, pursued by press photographers who been camped outside the Category D open jail for women and young offenders.
The ex-wife of former Cabinet minister Chris Huhne's has served around a quarter of an eight-month sentence for taking speeding points for him.
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David Black, 52, died following a motorway drive-by shooting in Co Armagh in November 2012 while on his way to work.
Videos posted online show both sets of fans collecting rubbish in the stadium.
Greg Hands says he will honour his election promise to vote against a third runway.