In the newly created role, he will advise clients on the priorities of the coalition and, in particular, the Conservative Party. O'Shaughnessy was the Prime Minister's director of policy from 2007 to 2011.
Abbie Sampson, Number 10's chief press officer, has taken the top media role at consumer group Which?. She will take up the role as head of news on 27 February, reporting to Richard Lloyd, executive director of Which?.
The British Library has appointed Susan Adams as head of advocacy. She will promote the British Library's issues, activity and policies to external stakeholder groups, including the Government. Adams was public affairs liaison at the Southbank Centre from 2006 to 2009, before spending two years as a freelance consultant.
Tesco has hired Downing Street chief press officer Ruth McAllister as head of UK media. In her newly created role, she will report to UK comms director Tom Curry, who joined last year from the Olympic Delivery Authority. McAllister is one of five chief press officers in Number 10, reporting to head of news Vickie Sheriff.