Prince William kicked off the first football match at Buckingham Palace, joking that any players breaking windows would answer to the Queen
A man has broken into Buckingham Palace sparking a major security alert - he was was arrested inside the Queen's home earlier this week.
Last Monday's break-in at Buckingham Palace is the latest in a series of security scares involving the Royal Family.
Prince William wants all ivory in the Royal Collection at Buckingham Palace to be destroyed, according to a leading primatologist.
Leading primatologist Jane Goodall told the Independent on Sunday that the Duke of Cambridge had told her he would "like to see all the ivory owned by Buckingham Palace destroyed".
Prince Charles has reportedly also asked for all ivory items at his Clarence House and Highgrove homes to be removed during the last few years.
Charles and William called on the world to turn its back on illegally traded animal parts like ivory and rhino horn in a video appeal earlier this month.
Illegal trade in animal parts such as rhino horn, tiger parts and elephant tusks is worth more than an estimated £11.5 billion each year.
Creations by Tracey Emin and Grayson Perry will appear among more than 100 contemporary artworks to go on show at Buckingham Palace.
The exhibition will mark the Queen's Diamond jubilee last year, and also features works from David Hockney and Anish Kapoor.
The works were loaned by the Royal Academy and include creations from some of its most high-profile artists.
Mr Hockney's work is a colourful image of the Queen's initials from her cypher "EIIR" created on an iPad, while Emin submitted a monoprint portrait of the monarch titled HRH Royal Britannia.
A man armed with a six-inch kitchen knife was rugby-tackled to the ground by police outside Buckingham Palace after jumping over a barrier to try and see the Queen. 44-year-old David Belmar from Haringey in north London admitted to trespass at Westminster Magistrates' Court today.
Belmar was watched by a crowd of around 20 tourists as he tried to run through the palace's north gate just before 11.30am on Monday. Edward Aydin, prosecuting, said: "In police custody, he said to police 'I wanted to see the Queen. I'm not happy about my benefits'."
He added that Belmar, who has mental health issues which he is taking medication for, has a fixation with the Queen and received a caution in 1989 for lighting fireworks and throwing them into the grounds of Buckingham Palace.
Today's arrest at Buckingham Palace follows a number of security alerts - last month a suspected burglar managed to get into the building after scaling a fence.
He was found at around 10.30pm on 2nd September in a room that had been open to the public during the day.
A second man was arrested outside the Palace on suspicion of conspiracy to commit burglary.
Less than 48 hours later, amid heightened security, two police officers confronted the Duke of York in the Palace gardens demanding to know who he was.
Scotland Yard issued a public apology to the Duke, which he later accepted.
A man arrested trying to gain entry to Buckingham Palace was arrested at the North-Centre Gate which is used as the everyday entrance to the Palace.
Buckingham Palace said that the Queen was not in the building when the man tried to get in, but would make no further comment.
A man carrying a knife has been arrested trying to enter Buckingham Palace.
A 44-year-old man attempted to enter Buckingham Palace via the north centre gate but was immediately apprehended by police.
The man was searched and found to be in possession of a knife.
He was arrested on suspicion of trespassing on a protected site and possession of an offensive weapon.
Prince William took part in a training session at Buckingham Palace while the grounds hosted its first ever football match.
The Duke of Cambridge was put through his paces in some of the Queen's Household team's training exercises.
In the historic game, Polytechnic FC beat Civil Service FC by two goals to one.
The Civil Service team presented William with two tiny tops for his son, Prince George - one red and the other white, both with "HRH 1" on the back.
Prince William booted up to train on Palace grounds while England's two oldest amateur football clubs played a historic match.
The Duke of Cambridge trained with the Queen's Household team while the game was underway.