Arrests in raids at London bridges and rail stations
24 August 2012 Last updated at 16:00 BST
Twenty-one people have been arrested during an operation focused on transport routes in London.
Operation Pegasus, which began at 19:00 BST on Thursday, saw about 300 officers deployed at bus and rail stations and on six bridges across the River Thames.
Among those held, one man was arrested in possession of an offensive weapon - a baseball bat, seven were arrested for drugs, two for driving while disqualified, one for being drunk and disorderly, one for fraud, one for theft of a vehicle and one for handling stolen goods.