President Barack Obama said the nation was grieving for those killed during the "tragic shooting" in Newtown, Connecticut.
During his weekly radio and television address, the President said, "We have endured far too many of these tragedies in the last few years ... We have to come together and take meaningful action to prevent more tragedies like this. Regardless of the politics".
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Terry Butcher said his son's life had been "tragically cut short" and described him as a "dedicated captain in the British Army".
Through the morning an area of rain will steadily track northeastwards across central England.
An outdoor nursery where children are only allowed to play with toys they have made themselves has been named Britain's Best Nursery.