Around 1,000 EDL protesters then made their way along Whitehall before taking a position on the pavement across the road from Downing Street.
A smaller group of anti-fascist demonstrators gathered opposite them holding an "EDL Racists" banner.
Both sides traded insults but were kept apart by officers and barriers.
The EDL supporters chanted: "We hate Cameron."
The anti-fascist supporters chanted: "Racist scum off our streets."
More top news
One of the world richest and most influential philanthropists has told ITV News that governments failed to act fast enough over Ebola.
Chewing gum manufacturers must help pay the multimillion-pound bill for cleaning up discarded pieces, councils have said.
The first volunteers from the NHS depart for Sierra Leone today to join the continuing fight against Ebola.