Two fathers' rights protesters dressed as Batman and the Hulk have been arrested after staging a demonstration on a rollercoaster ride in Blackpool.

Rory Wilmer and Colin Wallace climbed to the top of the 235ft high Big One ride at the Pleasure Beach amusement park just before lunchtime.

Once there they unfurled a banner with the word "Kapow!" written on it.

They were arrested by Lancashire Police for public nuisance after spending nearly three hours on the ride.

Both are being questioned.

Mr Wilmer, 23, and 34-year-old Mr Wallace are both members of the Liverpool branch of Fathers 4 Justice.

Pleasure Beach spokeswoman Gill Mathison said the protest left many children and families disappointed.

"People do want to go on the Big One," she said. "There are a lot of unhappy families here.

"Around 1,200 people go on the ride each hour and every hour it's closed people are disappointed."

A Fathers 4 Justice spokesman apologised for stopping the ride.

He added: "If people knew what Batman had to go through in his particular case you would find there is a major concern."

Fathers 4 Justice has staged a number of high profile demonstrations recently.

These include powder-bombing the Prime Minister in Parliament and storming Buckingham Palace.

Both protests caused alarm and were highly embarassing for police and security chiefs.