Thousands of farmers have taken to the streets of London in a bid to overturn the UK government’s recent changes to inheritance tax rules that they say will kill off the family farm and threaten food security.

Farms worth more than about $1.3 million will face an estate tax from 2026, ending a previous exemption and prompting anger in some rural communities.

Thousands of British farmers will march to Parliament Square on Tuesday to protest against the end of an inheritance tax exemption that has helped family farms pass down the generations, saying the move will threaten food production.