The prime minister had planned to lay out his thoughts on Europe on 22 January but it clashed with the 50th anniversary of the Elysee treaty, which established the European Coal and Steel Community making the date a diplomatic no-go.
The run-up to the speech has been beset by other PR problems too. It will be held in the Netherlands but Dutch liberal Prime Minister Mark Rutte - thought to share some of London's thinking on EU issues - is not planning on attending.
Meanwhile details of the speech are likely to be circulated to other European capitals in advance of Friday.
http://euobserver.com/news/118736