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.
More top news
The City of London Corporation have axed a controversial scheme to allow hunting in Epping after reports of deer being 'disembowelled'.
A burst water main caused serious flooding in south London this morning with businesses and homes left submerged in water.
Campaigners have vowed to block the building of a £50 million Holocaust memorial that is due to be built next to Parliament.