Small businesses are urging London councils to re-think their parking rules, saying they are being badly affected by new charges.
The Federation of Small Businesses has created a parking map, to raise awareness of the issue. Glen Goodman has been to one High Street to find out more.
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The latest poll for ITV London and LBC shows Sadiq Khan leads Zac Goldsmith by 45% to 36% on first preference votes.
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).