Warmer temperatures in May and June lifted sales of clothing and footwear to give the high street a much needed boost, the British Retail Consortium said.
Sales rose for the second consecutive month in June, raising hope that a recovering in consumer spending was beginning to fuel the economy.
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The announcement marks the end of a four-and-a-half year campaign by an array of forces against the extremist group.
The top temperature will be around 14 Celsius (57F).
Officers carried out first aid and paramedics were called to the scene, but the victim was pronounced dead a short time later.