After an EDL rally in Whitehall was dispersed earlier, supporters of the far-right group are now running through Leicester Square chanting "English till I die" and throwing bottles at police.
Police are holding the protesters in Leicester Square and closing the pubs in which they had been drinking.
More top news
The jury convicted Cilliers of two attempted murder charges and a third count of damaging a gas fitting.
Demi Pearson, 15, her brother Brandon, aged eight, seven-year-old sister Lacie, and sister Lia, three, all died.
Irish ex-pats from all over the world are returning home to cast their votes in the upcoming referendum.