A fathers' rights activist has been found guilty of spraying purple paint across a portrait of Queen Elizabeth II in Westminster Abbey.

Forty-two-year-old Tim Haries told jurors he defaced the royal portrait with the word "help" to highlight what he described as the "social catastrophe" of fathers being denied access to their children.

Haries, who was dressed in a Superman suit, is a member of Fathers4Justice, a group that has carried out a series of stunts in support of the right of divorced fathers to see their families.

Many members, Harries included, claim British courts have unfairly prevented them from spending time with their children.

Southwark Crown Court found Haries guilty of criminal damage. In a statement released after the verdict, Haries says he accepts the verdict.