This video shows anti-badger cull protester Jay Tiernan being arrested by police at a site belonging to the Department for Environment, Food and Rural Affairs (Defra) in Gloucestershire.
Tiernan, who leads the activist group Stop The Cull, identified himself to ITV News correspondent Rupert Evelyn before climbing over the fence into the compound.
When three police cars and a helicopter arrived at the scene he tried to escape but was quickly arrested.
More top news
A pensioner who is believed to be armed with a gun is in a stand-off with police.
One of the world's longest-running conflicts is set to come to an end.
Four people have been stabbed in a series of knife attacks at the Notting Hill Carnival.