UBM director of comms Michael Waring confirmed CDR had been appointed to the brief, ending a five-year relationship with The Maitland Consultancy.
Waring, who moves to FTSE 250 property group Slough Estates at the end of this month (PRWeek, 5 August), added that Maitland pitched against CDR and 'other' agencies for the brief but declined to elaborate.
'It was a natural time for a review and a new appointment should bring a change of approach,' Waring told PRWeek.
The move follows the arrival in April of new CEO David Levin. He was previously CEO of technology firm Symbian, and replaced UBM founder and Labour peer Lord Hollick, who left in May to become a director of US private equity firm Kohlberg Kravis Roberts.
CDR director Chris Barrie, who also runs the agency's account with Symbian, is leading the UBM account.
Levin's arrival marked a shift in UBM's strategy away from that of Hollick, who was associated more with UBM's former ownership of Express Newspapers and its 35 per cent stake in Five, formerly Channel 5.