Security breach at William's party

Aaron Barschak who broke in to Windsor castle

The government has ordered a full report into the breach in royal security at Windsor Castle.

Aaron Barschak, a stand-up comedian who calls himself a "comedy terrorist", managed to break in to Prince William's 21st birthday party - while almost every senior member of the royal family was present.

If he had been a terrorist, it's possible that today, Prince Edward might be the new King.

On Breakfast this morning, we asked - how could this have happened?

We spoke to Martin Mullaney, who has had Aaron Barschak at his comedy club in Birmingham.

We spoke to John O'Connor, who's a former commander at Scotland Yard.

Around 100 police officers are said to have been on duty at the castle at the time of Saturday's security breach.

Thames Valley police secure the perimeter of the castle.

The Metropolitan Police are responsible for security inside the castle while the Royal Protection Group form the inner cordon of protection.

If he found a weakness in the building itself...that's really a matter for the works engineers and people who provide the physical security

John O'Connor, former commander at Scotland Yard

The incident is likely to lead to a massive overhaul of royal security.

John O'Connor is a former commander at Scotland Yard's Flying Squad - he told Dermot that the public should not be too quick to judge the police officers involved as "we don't always hear about all the things they are able to frustrate".

But he agreed that the security breach was serious - and that Scotland Yard will be keen to find out what went wrong.

Martin Mullaney, who owns a comedy club in Birmingham has seen Aaron Barschak's act.

He's notorious on the comedy circuit for gatecrashing comedy gigs

Martin Mullaney, comedy club owner

Martin Mullaney said the latest incident will probably boost Barschak's career - initially - "he could be brilliant, he could be world famous".

So how serious do you think this breach in security was? We want to know what you think about it.

To have your say on the issues raised by the programme click on the link below - or e-mail us at [e-mail]