The Crown Prosecution Service says it has "carefully considered a file of evidence" gathered by police following newspaper allegations against former Co-op Bank chairman Paul Flowers.
Clare Stevens, from CPS Yorkshire and Humberside’s Complex Casework Unit, said she believed "there is sufficient evidence and it is in the public interest to charge Paul Flowers with possession of Class A and Class C drugs relating to an incident on 9 November 2013".
Mr Flowers has been charged with possession of cocaine, methamphetamine and ketamine, the CPS said.
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