A man has been arrested following a rooftop protest at deputy Labour leader Harriet Harman's Herne Hill home.

Police said Fathers 4 Justice campaigner Mark Harris, from Devon, was held on suspicion of criminal damage, causing a public nuisance and other offences after clambering on to the roof with another protester dressed as comic book heroes yesterday.

The demonstration was intended as an "early Father's Day strike" against the Government over fathers' access to their children, the protesters said.

Fathers 4 Justice (F4J) named the pair as Mark Harris and Jolly Stanesby, from south Devon, and said they were dressed as "Captain Conception" and "Cash Gordon".

The group claimed another two activists were inside Ms Harman's home in Herne Hill, south London, and had unfurled a banner from a bedroom window reading "A Father is for life, not just conception".

Fathers 4 Justice founder Matt O'Connor said: "Harriet Harman and the Government have refused all dialogue with F4J for the past two years.

"We are now resuming a full-scale campaign of direct action against the Government, its ministers and the judiciary. F4J is now the last line in the defence of fatherhood."