There's also the traditional transport operation to make those crowds of revellers get into and out of London safely.
Piers Hopkirk reports now on the preparations ahead of tonight's festivities.
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The Tooting MP has been the frontrunner in the counting process ahead of Tory challenger Zac Goldsmith.
It's not just London where elections have been taking place today. There were council elections taking place across the home counties.
A list of results for London Mayor and the London Assembly