A group of fathers' rights campaigners have been arrested prior to a planned stunt on the Queen's Sandringham estate in Norfolk.
The group has staged several Christmas stunts in recent weeks
Fathers 4 Justice says several activists were arrested trying to climb the spire of a church where the Queen later attended a Christmas day parade.
A Norfolk Police spokeswoman said eight men had been arrested "in relation to breach of the peace offences".
The Queen attended St Mary Magdalene's Church with Prince Philip.
The spokeswoman said the men "were arrested on the periphery of the estate" and taken to a police station in Norfolk for questioning.
The Queen is believed to have been informed of the incident.