Police are appealing for information over the identities of two suspects thought to be involved with an armed robbery in Plaistow, in which a shop keeper was shot in the chest.
Suspect one is described as wearing dark trousers and a dark baseball cap under a dark, hooded jacket which features a logo on the top of each arm.
Suspect two is described as also wearing dark trousers, and a dark jacket with a white strip down the centre of the front.
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The force says the increased police presence should provide reassurance to the public - without affecting the spirit of the event.
Resident group Justice 4 Grenfell say they were not consulted and will raise concerns about the appointment at the highest level.
They tried to drive off, pursued by the suspect on foot, before their car crashed into a fence.