A demonstration by Muslims calling for some limits to freedom of speech attracted a small number of counter protesters from the English Defence League (EDL) and Britain First.
People taking part in the Muslim Action Forum event carried placards with slogans including "ABSOLUTE Freedom of Speech - no such thing", "To Insult Is Not Freedom" and "Learn Some Manners".
In response to the demonstration, small groups carrying Britain First banners and EDL flags also gathered on Whitehall. Some shouted "Je Suis Charlie" and some chanted racist slogans.
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The unlicensed events unfolded on Saturday night at Clapham Common and Tooting Bec Common.
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