The six were arrested in the past week in connection with alleged public order offences they are said to have committed at the TUC march last month.

But officers moved to arrest them this week as they feared the group were planning further disruption at the royal wedding on Friday. The six have been issued with bail conditions stopping them from entering central London on the day of the wedding.

It brings the total number of anarchists banned from London on the day of the wedding to 68. And Scotland Yard sources confirmed that further arrests are planned in the coming days as they move to minimise the potential of trouble for Prince William and Kate Middleton on the big day
Source:  http://www.telegraph.co.uk/news/uknews/royal-wedding/8474133/Royal-wedding-six-anarchists-arrested.html