A man has been arrested after climbing over Buckingham Palace's front gates in the middle of the night, police have said.
The royal standard flag was flying at the palace at the time of the break-in, meaning the Queen was in residence.
The intruder was not carrying any weapons and the incident is not being treated as terror-related, according to Scotland Yard. Fagan scaled a palace drainpipe to enter the queen's bedroom and sat chatting with her for 10 minutes before she was able to summon help.
The man remains in custody at a south London police station.
The intrusion is a devastating blow to the security operation at the palace, which has been struck by a number of similar incidents.
The 64-year-old double-bassist accepted the award in person at a special audience with the Queen.
The doors were all locked as the man apparently tried to gain access the residence for several minutes.
Security officials found the 44-year-old sleeping on the ruined items in an area near the south-east corner of the palace just after 5am, where he bedded down at around 1am, the court was told.
"He was determined to get inside the palace and was banging down the doors but, thank goodness, everything was locked up".
A second man was arrested outside the palace for conspiracy to commit burglary.
"The police eventually detained him under the mental health act, but they have to ask some serious questions about how he got on and how he had so long to roam free", the source says.
The Duke of Edinburgh, who has been based on the Queen's Sandringham Estate in Norfolk since his retirement in 2017, was not at Buckingham Palace.
The most famous came in 1982, when 33-year-old unemployed British man Michael Fagan broke into Buckingham Palace and entered the Queen's bedroom.
"I am grateful for their apology and look forward to a safe walk in the garden in the future".
A Palace source told The Sun: "Of course this will be a matter of great interest to the Queen".
"At this stage we think she was the only senior royal sleeping at the Palace because of the refurbishment work going on".
During the chat the Queen pushed the panic button by her bed but got no response, and it wasn't until her aide Paul Whybrew retruend with her corgis that he saw Fagan.
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