Briton held in Pakistan denies London bomb link

In a letter to Britain's Daily Telegraph newspaper, Zeeshan Siddiqui rejected reports he had met senior al Qaeda figures and one of the London bombers, Shehzad Tanweer.

Siddiqui had been arrested as a possible so-called "missing link" to the four bombers who killed 52 commuters on three London underground trains and a bus, the Telegraph reported.

British police have not charged anyone so far in connection with the July 7 attacks.

"I totally condemn these acts of violence," Siddiqui wrote. "I have never taken part in any terrorist activity nor do I support or ever intend to support any terrorist activities."

Pakistani President Pervez Musharraf, an ally in the U.S.-led war against terrorism, ordered a crackdown on militants after revelations that three of the four London bombers visited Pakistan before the attacks.