The coaches were stopped by large teams of riot officers accompanied by FIT photographers. They subjected everyone to a search under the S60 powers while the FIT officers took detailed video of every person.
The riot officers seemed to take a long time to conduct the search with the result that many of the coaches were an hour or two late to the protest.
The police also distributed leaflets to the passengers so they were “aware” of the extra powers the police had imposed on the protest.

Several arrests were as a result of the searches including schnews crap arrest of the week
 http://www.schnews.org.uk/archive/news7967.php