Fathers’ rights campaigners have climbed onto the roof of the Queen’s Gallery at Buckingham Palace this evening. 

Security failed to stop Martin Matthews, 48, and Bobby Smith, 33, as they used a ladder to scale the building.

A third activist caused a distraction.

They held up a banner that read ‘I am Harry’s dad’ as part of a joint campaign by the groups New Fathers 4 Justice and Stop The War On Dads.

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Security breach at Buckingham Palace as campaigners climb roof
The campaigners climbed the roof just before 4pm (Picture: WENN.com)

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Negotiators arrive at the Fathers For Justice protest on the roof of Buckingham Palace. Featuring: View Where: London, United Kingdom When: 29 Nov 2015 Credit: WENN.com
Negotiators have arrived at the scene (Picture: WENN.com)

Activists want to spread awareness of divorce proceedings which they claim are unfavourable for fathers.

A spokesman for the campaigners said: ‘Parental alienation should be criminal offence and parents who, following the breakdown of a relationship, attempt to turn their child or children against the other parent should be prosecuted.’

A Metropolitan Police confirmed they were called to the scene at 4.28pm.

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A spokesperson said: ‘Officers attended and two males were found to have climbed on to the roof of the entrance at the location.

‘Officers are currently speaking with the people concerned. The incident is ongoing.’