Britain's capital is bracing for travel chaos with a planned 24-hour London Underground strike.
Almost 20,000 staff of the rail network known as the Tube, belonging to four different unions, are due to leave their posts in a dispute over pay and plans to run an all-night service on weekends from September.
The walkout is set to cause chaos for millions of travellers and bring the world's oldest subway system to a halt.
Transport for London says there'll be "no Tube service at all on Thursday", with the disruption expected to continue into Friday (local time).
British media are describing the strike as set to be the worst since 2002.
Four unions have rejected an offer which includes an average salary rise of 2 percent and a bonus of STG2,000 (NZ$4,647) for drivers on the new all-night services.