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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Little Sophia Williams died in a children's hospital in Edinburgh on June 5.
Dry spells over parts of Scotland in the next few days and remain dry. More rain in the north. Temperature will remain mild.
The world's largest aircraft crashed on its second test flight - despite only going 5mph.