A dozen protesters from different groups yesterday held a picket of Serco's head office in central London in solidarity with the Yarl's Wood hunger strikers (see  http://www.indymedia.org.uk/en/2009/06/432625.html) and to express their anger at the way Serco security guards have dealt with detainees. The office was closed and no police turned up for the entire two hours that the protest lasted for. Leaflets were distributed and loud chants were shouted via a loudspeaker. The walls and floor surrounding the office were also 'decorated' with chalk to tell Serco staff and neighbours that Serco's business (i.e. locking up and abusing innocent people) is not acceptable.