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Well she certainly 'lied' by saying she filled in the NIP form (as is required by law)
She didn't get to the Old Bailey on the strength of a minor speeding offence. She got there as a result of several interviews with the police who decided she was lying and convinced the CPS of the same.
(no mean feat, I'd say, given her position and how TPTB treasure community cohesion)
If she isn't a liar, an awful lot of other people are.