Five Spurs fans have been hurt - one of them seriously - after being attacked by Italians in Rome.
Up to 50 of the "Ultras" - supporters of the Italian side Lazio - stormed a bar where the Londoners were drinking in the early hours of this morning.
Spurs play Lazio tonight in Europa League.
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David Cameron said the Met proved it can "do more with less" and declined to criticise the Mayor of London for his water cannon spend.
A group of disabled activists threw toys and balls at him as he entered the conference.
A wet start to the week and the unsettled weather is set to continue over the next few days.