On Saturday 22 April 2017 the annual Society of St George wreath laying ceremony will take place in Whitehall. From 0900 and until 1150 hours Whitehall will be closed to all traffic including buses between Horse Guards Avenue and Parliament Square.
Route 3 11 24 87 88 from 0900 on diversion both ways from Parliament Square via Victoria Embankment returning to line of route Whitehall via Horse Guards Avenue.
Route 12 159 453 from 0900 on diversion both ways from Westminster Bridge via Waterloo Bridge and Strand returning to line of route Cockspur Street via Trafalgar Square.
Route 53 from 0845 curtailed at County Hall until Parliament Square is clear.