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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Dry overnight with clear spells developing.
Mostly dry. Some patchy rain in the south.
A nurse from Birmingham who specialised in eating disorders used her medical knowledge to conceal the anorexia that killed her.