A second arrest has been made over the death of PC Andrew Duncan after he died from his injuries following a hit and run collision on Friday.
The Met have confirmed a woman has been arrested on suspicion of perverting the course of justice. She remains in custody at a South London police station.
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The capital's theatres also generate more searches than those in any other city, according to research by Google.
Union officials are expected to meet next week to plan further stoppages if talks fail to resolve the dispute.
Natalie Sharp and Christine Bicknell appeared in court over an alleged incident at a Lidl superstore in Wallington, south London.