Dentsu Aegis Network's move to bring its UK planning and buying teams back together shows that clients are demanding faster responses to briefs and do not want the disciplines to be separated. That is according to Graham Brown, director and co-founder of pitch consultancy MediaSense, who said that Dentsu Aegis Network's changes "make absolute sense as clients require agencies to be more agile and responsive businesses". He added: "These silos in planning and execution I don't think work any more.