File photo dated 1/5/2004 of the Euro flag. Ministers will be free to campaign on either side of the referendum on Britain's continued membership of the EU, Downing Street sources said, PRESS ASSOCIATION Photo. Issue date: Tuesday December 8, 2015. They will not be allowed to break ranks until the Prime Minister has secured a renegotiation deal with fellow EU leaders - which cannot happen until at least next month's summit. See PA story POLITICS EU. Photo credit should read: Andrew Parsons/PA Wire
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