A FATHERS4Justice campaigner from Worcester claims Buckingham Palace was a "legitimate target" for disgruntled dads in their escalating battle against the courts.

Martyn Blackwell was one of the protesters in London who helped campaign leader Jason Hatch, from Cheltenham, dressed as Batman, scale the walls of the Queen's official residence in London.

Mr Hatch then unfurled a banner, which read: "Super dads of fathers 4 justice".

Mr Hatch and Dave Pyke - who accompanied him dressed as Robin - are both in custody as an investigation into the embarrassing security breach was launched.

Mr Blackwell spoke to the Evening News from outside Bow Street Magistrates Court, where fellow campaigner Ron Davies was appearing for throwing a flour "bomb" at Prime Minister Tony Blair in the House of Commons.

"It's raising awareness that we want the law changed to allow equal access and, because the courts all have the royal crest, Buckingham Palace is a legitimate target," said Mr Blackwell.

"He did not use a ladder but we can't say how he got through because of the security implications."

In April this year, Mr Hatch, 33, and an accomplice dressed up as Batman and Spiderman and climbed on the roof of Worcester Crown Court. Proceedings were brought to a standstill for the day.

Mr Blackwell, who supported the duo from the ground, then claimed it was the start of an "escalating campaign" to raise awareness.

It also comes after a newspaper reporter was able to gain a job as a servant at the Palace last November, before the high-profile visit of President Bush.