File photo of Anjem Choudary, the leader of the dissolved militant group al-Muhajiroun, as he arrives at Bow Street Magistrates Court in London. Reuters
Choudary, 56, faces charges of belonging to a proscribed organisation, addressing meetings to encourage support for a proscribed organisation and directing a terrorist organisation, the force said.
A 28-year-old Canadian, Khaled Hussein, was also charged with membership of a proscribed organisation.
Counter-terror officers "investigating alleged membership of a proscribed organisation" arrested both men last Monday, the Met added.
Officers detained the high-profile Choudary in east London and held Hussein at Heathrow Airport after he arrived on a flight.
They are both set to appear at Westminster Magistrates' Court in central London later on Monday.