David Cameron chose Essex as the location for a speech to lay down a few markers ahead of the G8 summit next week.
He said he wanted Britain to cement itself as a global competitor and believed its role in organisations like the EU would be central to that.
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Temperatures will fall quickly this evening and a sharp frost will develop across the region.
A £20,000 pound reward is being offered for information that could lead to Mr Moore's safe return.
Police say the sheep had their throats cut and carcasses removed, while they were grazing in a field.