Former Whitehall adviser Patrick Rock has been bailed to appear at Westminster Magistrates Court on July 3 after he was charged over child abuse images.
Judith Reed, a senior lawyer with the CPS Organised Crime Division, said: "We have determined that there is sufficient evidence for a realistic prospect of conviction and that a prosecution is in the public interest."
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Save Your Uber in London was set up after it was announced the firm would not have its licence renewed when it expires next week.
After a damp morning it will brighten up in the south and northeast but will remain cloudy in northwest England and southern Scotland.