• Iris London's joint chief executive Tom Poynter is leaving the agency at the end of the year. Ian Millner, the global chief executive, will continue to lead Iris after Poynter's departure.

• Nick Brien has been replaced as chief executive of McCann Worldgroup by Harris Diamond, chairman and chief executive of IPG's constituency management group, which oversees GolinHarris and Weber Shandwick.

• Naked hires former Microsoft exec as Global CEO.

• Grey London has hired Adam & Eve/DDB's planning director, Leo Rayman, to the new role of head of planning.

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• MPG Media Contacts has hired Debra Isaacson, business development director for Europe, the Middle East and Africa at OMD, as its managing partner, marketing, replacing Emma Thwaite.