TfL Planned Engineering Works
National Rail Engineering Works
National Rail for train timetables, delays, ticket prices.
Transport for London for timetables, status updates and everything else
Nearest Tube to Curzon Gate is Hyde Park Corner (Piccadilly Line). When leaving, Parliament Square, nearest Tube is Westminster (Circle, District and Jubilee lines).
If you are starting the march at Trafalgar Square, the nearest Tube/rail station is London Charing Cross (CHX) (Northern and Bakerloo lines).
NB: Northern Line escalators at Charing Cross tube are being refurbished 30 August 2017 to late September 2018 so you may experience delays.