Six tents that were put up outside the London Stock Exchange earlier have been removed by Police.
Officers told demonstrators from Occupy London that they had thirty minutes to leave the area in Paternoster Square.
Dozens of people gathered there after a day of May Day protests in the capital.
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London mayor Sadiq Khan and Prime Minister David Cameron both gave speeches in Roehampton at the arrival of Britain Stronger In Europe bus.
Millwall fans who forced Barnsley supporters to flee as they tried to break into the opposing team's end at Wembley could face life bans.
Some sunny spells are likely later in the west following a dull start.