Twenty thousand tractors are set to block central London streets in protest against a new 20% inheritance tax on agricultural assets valued over £1 million, effective next year. Authorities have warned protesters of potential arrests if they disrupt traffic. While the Treasury claims the changes will minimally impact farmers, the National Farmers’ Union argues that 75% of British food production will suffer under the new tax regime. Organizers urge participants to avoid drastic tactics that could alienate public support ahead of crucial meetings with lawmakers.