The jury in the trial of Vicky Pryce - Chris Huhne's ex-wife - has retired to consider its verdict.
She is charged with perverting the course of justice by taking her ex-husband's speeding points in 2003.
Jurors at Southwark Crown Court in London heard that she denies the charge, claiming she was coerced by Huhne as he tried to avoid losing his licence.
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Home Office data offers an incomplete picture of the perpetrators and victims, the National Audit Office (NAO) have said.