The Ministry of Defence has confirmed that ground based air defence systems will be deployed at the following sites in order to protect the Olympics.
Lexington Building, Fairfield Road, Bow, Tower Hamlets - High Velocity Missile
Fred Wigg Tower, Montague Road Estate, Waltham Forest - High Velocity Missile
Blackheath Common, Blackheath (Lewisham/Greenwich) - Rapier
William Girling Reservoir, Lea Valley Reservoir Chain, Enfield - Rapier
Oxleas Meadow, Shooters Hill, Greenwich/Woolwich - Rapier
Barn Hill, Netherhouse Farm, Epping Forest - Rapier.
More top news
Corbyn was unveiling a poster less than a mile away as Khan gave his final campaign speech to party supporters in London.
Hay fever is an allergic reaction to airbourne pollen. There are 2 million sufferers in London (that's one in 5 people).
The man suffered head injuries after falling from Westminster Bridge and landing on concrete steps.