The protesters climbed to the third floor

The men, who climbed to a ledge three floors above the pavement at 0500 BST on Thursday, were demonstrating over access to their children.

The men came down peacefully shortly after 1900 BST.

They were taken to Cardiff Central police station for questioning on suspicion of causing criminal damage.

The protest at Cardiff Civil Justice Centre in Westgate Street attracted about a dozen protesters.

During the demonstration, police cordoned off an area of pavement underneath the ledge and gave the men harnesses to make them safer.

For any judges listening it is very simple - enforce your orders and we will go and spend time with our kids and we'll stop bothering you Matthew Mudge

Fathers 4 Justice founder member Matthew Mudge, who chairs the Cardiff group, said: "It is a stand to get publicity on the subject of fathers not seeing their children and grandparents not seeing their grandchildren.

"The reason most of us are here is that we have actually got orders from a court to see our children and when the orders are flouted the courts are spineless to deal with it.

"For any judges listening it is very simple - enforce your orders and we will go and spend time with our kids and we'll stop bothering you."

Mr Mudge, 41, said both the men involved in the protest were from Cardiff and had court orders which said they should have access to their children.

Fathers 4 Justice were behind the flour-throwing incident

Another member of the protest group, Guy Harrison, 36, from Ashurst in Sussex, admitted a public order offence on Wednesday for throwing flour at Tony Blair during prime minister's questions last week.

Mr Blair was hit by a condom filled with purple flour.

A review of security at the House of Common is now underway.

The group has staged a number of demonstrations at height to further their cause.

Protests have seen members scale Bristol's suspension bridge, a crane in Manchester and gantries over roads in London.