A week of protests against hospital reform plans starts today. Defend London's NHS week will see a coalition of doctors, patients and health workers against plans to downgrade A&Es and other vital hospital services in the capital.
The campaign kicks ogg with a press conference at the House of Commons bringing together representatives of the Lewisham, Ealing, Hammersmith & Fulham, Kingston and Islington hospitals campaigns.
More top news
The man was taken early this morning to a south London police station where he remains in custody.
Officers arrested a 15-year-old boy in Stratford on Saturday night on suspicion of grievous bodily harm.
Six people were injured after they were hit with the substance during an "altercation" between two groups at a shopping in east London.