Anti-vaccine mandate protesters have moved to Exhibition Park in Canberra after police started removing tents from an illegal campsite on the Patrick White Lawns.

Protesters are reportedly travelling down Northbourne Avenue, delaying traffic and honking horns with some people leaving their vehicles and waving with red ensign flags. The flag has been co-opted by the Sovereign Citizen movement - a group who believe laws do not apply to them.

About 100 police officers, including a specialist response group and Australian Federal Police, converged on the original campsite site on Friday morning and began removing swags, tents and chairs.