The National People's Congress Standing Committee confirmed it had approved a decision to remove Bo as a deputy - but gave no further details. Communist Party leaders are trying to resolve the country's political scandal as they prepare for the transition of power to the next generation of leaders.
- Bo had been a rising political star and his toppling exposed sharp infighting in the party's uppermost ranks
- Bo's downfall has been spectacular: His wife, Gu Kailai, was convicted of murdering British businessman Neil Heywood
- His former right-hand man was accused of taking bribes, abusing power and trying to defect to the United States, among other crimes
More top news
The threat level has been raised to critical by MI5's Counter-Terrorism Analysis Centre.
Prime Minister Theresa May announced the decision from Downing Street.
A man, apparently armed with a small axe and a large stick, was detained close to the event and police cleared the area as a precaution.