It is unknown whether Amanda Knox and Raffaele Sollecito will appeal their murder convictions, or whether Knox could be extradited from the US to Italy.
A potential international legal battle is further complicated by US double jeopardy law which prevents defendants being tried twice for the same crime.
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The Prime Minister will urge leaders of the other 27 EU states to move on as quickly as possible to talks on Britain's future trade.
Despite temperatures reaching double figures in the south today, it was still a chilly day, with brisk winds.
The four-time Tour de France winner has said he has always taken great care to stay within the rules after returning an adverse urine test.