Prime Minister David Cameron told ITV News Europe Editor James Mates the EU leaders discussed how they could encourage transition in Syria "at the top" - through the United Nations - and help and advise the Syrian opposition forces.
Mr Cameron said they had not discussed the possibility of military intervention during the summit:
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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.