Julie Harrington, chief executive of the British Horseracing Authority condemned the “reckless and dangerous” actions of a protester at Epsom Downs on Saturday when one ran onto the track after the Group 1 Betfred Derby had begun.

The protester sprinted onto the home straight in the early stages of the Classic but was quickly pursued by police and security staff.

Moments later a woman tried to jump the running rail in front of the grandstand as police officers rushed to stop her.

Angry spectators could be heard screaming, while police threw her to the floor and handcuffed her just as the horses finished the Group 1 event.

Before the two-day Festival, Animal Rising had threatened to "cancel or severely delay" the big race of the weekend at Epsom but with the huge efforts from all the track team on course, police and security staff, the event went on as planned with minimal impacts from the group.

Harrington thanked the police and security teams for their speedy and effective response but criticised the behaviour of the protester involved.

A statement said: "We strongly condemn the actions of the individual who ran onto the track after the Betfred Derby had started.

"Despite Animal Rising having previously stated on multiple occasions that they would do nothing to jeopardise the safety of horses and riders, this reckless and dangerous behaviour did exactly that and I am grateful to Epsom's security team for their swift response to ensure the race could be completed safely.

"I would like to extend my thanks to the staff at the Jockey Club and my colleagues at the BHA, who have worked tirelessly to ensure the Derby could be staged safely, and to the race's participants who cooperated fully during what were shortened preliminaries.

I also want to thank Surrey Police for their decisive actions ahead of the Derby."

Last week, The Jockey Club was granted a High Court injunction against the activist group and chief executive, Nevin Truesdale reinforced Harrington's comments.

He said: "Our security teams and the police acted swiftly and decisively to remove an Animal Rising protester who entered the racetrack after the Derby had started and while the race was being run.

"This reckless and illegal behaviour which threatened the safety of our equine and human athletes is a breach of the High Court injunction which the Jockey Club obtained last week and prohibits trespass.

The court order provides a clear route to prosecution, fines and even the threat of prison for Contempt of Court and we will now take steps to enforce that.

"Animal Rising have repeatedly stated that they would not attempt to disrupt any races while in progress and we utterly condemn their deplorable and mindless actions today.

"The Derby was first run in 1780 and has continued despite two world wars, the Covid pandemic and a number of other extreme challenges.

That the 244th running of the race was able to take place on time today is testament to the determination of everyone to stage one of British sport's most iconic and loved events."

A spokesman for Surrey Police said: "We can confirm that 31 people have been arrested in connection with planned criminal activity at the Epsom Derby Festival this afternoon.

"Eleven people were arrested at addresses in Mitcham and Byfleet in the early hours, following warrants based on intelligence received ahead of the Epsom Derby Festival.

A further eight people were arrested after their vehicle was stopped on Canons Lane in Burgh Heath at around 10.20am this morning.

"All were arrested on suspicion of conspiracy to commit public nuisance and remain in police custody.

"A total of 12 people have been arrested within the Epsom Downs racecourse since the event began this morning, also in connection with planned criminal activity.

"One man was arrested after he ran onto the racetrack after a race had started. He was quickly removed by event security and police officers, meaning the race was not disrupted."

Chief Superintendent Clive Davies said: "Our officers and event security responded quickly and decisively after a man ran on to the racetrack after a race had begun.

"We will not tolerate criminal behaviour which puts lives in danger, including those of the animals, jockeys, security staff and our officers."

2023 Betfred Derby-winning jockey, Ryan Moore gave his reaction: "Andrew Cooper (clerk of the course at Epsom) and his team and the Jockey Club and the BHA (British Horseracing Authority) have been on top of it.

It seems to have gone off without a hitch and I think that is a very good sign."