Otis Ferry told a court yesterday how he was throttled by a doorkeeper at the House of Commons after he and a group of pro-hunting demonstrators invaded the chamber.
Ferry, the son of rock star Bryan and master of the South Shropshire Hunt, described how the doorman "pounced" on him as he lay on the floor, still trying to address Rural Affairs Minister Alun Michael.
The 22-year-old claims that he struggled to breathe as the doorkeeper tried to silence him.
He also alleged that another doorman put his knee against his back and described their actions as " unnecessarily forceful".
Ferry was one of a group of eight pro-hunting demonstrators who stormed the Commons chamber on September 15 last year during a debate on a Bill to ban the sport.
At their trial at Bow Street Magistrates Court in central London Ferry told how, after bursting into the chamber, he tried to address Mr Michael directly.
Ferry said he looked the Minister in the eye "because whenever you try to talk to him he tries to divert his eyes. He will not acknowledge you are talking to him.
"There was no way he could squirm out of this conversation.
" I then felt somebody touching my shoulder. I looked around to see it was a guard or a doorman. I immediately dropped to the floor to make it clear I was not going to push him around.
"I continued to look up at Alun Michael and told him that what he was doing was incredibly unjust.
"I continued to talk and raise my voice then one of the doormen pounced on me and started throttling me in an attempt to silence me. I could not breathe.
"Another one put his knee against my back. I started wriggling - not to get away because I had done what I intended to do.
"They were being unnecessarily forceful for a few seconds."
Ferry said that after they allowed him to his feet he walked out of the chamber peacefully.
Ferry also told the court of the ease with which he and the group slipped past the doorkeepers as they approached the entrance to the chamber.
They had entered the Commons dressed as builders, but had discarded their outfits in a committee room to expose their pro-hunting T-shirts.
As they strolled through a corridor "strung out like horses in a bad race" on the approach to the chamber, Ferry said they passed one doorkeeper who seemed "like he was asleep".
Ferry said he had "most definitely not" intended to use violence during the protest and claimed: "I have never had a fight in my life."
He told the court he had always believed the plan could succeed having visited the Commons just two days previously.
"I would have been wasting my time if I had not thought that," he said. "I saw the confusion and the bad management when I was there on the Monday and the chaos on the construction site. It meant a lot to me to make my feelings heard."
Ferry, who left school at 16 to study as an apprentice with a pack of fox hounds, added: "I had not necessarily thought of what we were going to do when I visited Westminster.
"I thought 'gosh - there must be some way of stopping this from happening'."
The trial continues.