Deyan Deyanov, 29, has been found guilty by a jury at the Provincial Court in Santa Cruz de Tenerife, Spain, of murdering grandmother Jennifer Mills-Westley, 60, who he decapitated on the holiday island in May 2011.
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Temperatures will reach around 28 Celsius (82F) at their highest.
A minute's silence will be observed at 11am on Thursday in remembrance of those who lost their lives in the Manchester Arena attack.
New research has found those who consumed two cups had a 35% reduced risk, and for those who drank five cups, the risk halved.