Open organisers admit it will be "challenging" to prevent protesters disrupting this year's championship at Royal Liverpool but have expressed confidence in their "robust" security arrangements.
A man wearing a 'Just Stop Oil' T-shirt interrupted the World Snooker Championship match between Robert Milkins and Joe Perry on Monday evening by jumping on to one of the tables and tipping orange powder over the cloth. A woman was prevented from executing a similar stunt on the other table after being tackled by referee Olivier Marteel.
