Campaigners are urging the government to reject a report that says Lewisham Hospital should sacrifice services, for the sake of a debt-ridden health care trust. The plan calls for it to lose its maternity and A-and-E units.
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Official readings are recorded three metres in the air but a study found levels of nitrogen dioxide (NO2) were higher at pushchair level.
Tubes, trains, trams, buses, cable cars, river buses, taxis and going by foot - your guide to getting around during the strike.
Union officials rejected a revised offer from Underground managers during a meeting at the conciliation service ACAS this afternoon.