PC Marc Horsewood from Lincolnshire Police speaks to ITV News about the importance of the march in London.
He is just one of up to 20,000 police officers from forces across England and Wales travelling to London today.
This is the first police march in the capital for more than four years.
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The two bottles, dating back to 1871, were made when Queen Victoria was on the throne.
Police say there are signs of a disturbance in her bungalow which may be linked to her death.
A grey, cloudy day with drizzle this morning easing later.