A Yorkshire farmer has warned that protesters are "building an army" to challenge the Labour government's inheritance tax changes affecting agricultural land.

Olly Harrison, 43, issued the stark message during the Business Property Relief Summit at London's Palladium."

Last time we were 45,000 farmers outside Rachel Reeves' door. Next time we'll be 250,000," said Harrison, a fifth-generation farmer.

The father of three, who helped organise last month's mass protest in London, warned he might be forced to sell parts of his farm when inheriting it from his 76-year-old father Thomas to meet tax obligations.

"I was up on the roof the other day, which my dad put up in 1985, fixing some storm damage - there is still a massive storm raging at the moment and it is able to destroy a lot of businesses," Harrison added.