The Unite the Kingdom march is the second rally of its kind organised by the anti-Islam activist Tommy Robinson, who says it is a demonstration for “national unity, free speech and Christian values”.
It will start on Kingsway and proceed to Aldwych, Strand, Trafalgar Square, Whitehall, ending in Parliament Square.
The speeches and music are to conclude by 17:30, and the assembly must end by 18:00.
There will be two parallel corridors running east-west through central London for most of the afternoon, with Trafalgar Square, Whitehall and Parliament Square sitting between them and the two end-points where speeches are planned.
The Met Police has been explicit about keeping the two crowds apart, so hard cordons and rolling closures around Pall Mall, Haymarket, lower Regent Street, Trafalgar Square approaches and the bridges feeding Whitehall are to be expected.
