Some Hong Kong judges fear they are being put on a collision course with Beijing as the special administrative region's government pushes for sweeping legal changes that would for the first time allow fugitives captured in Hong Kong to be sent to mainland China for trial.

Three senior judges and 12 leading commercial and criminal lawyers say the changes, called the Fugitive Offenders Ordinance amendment bill, mark one of the starkest challenges to Hong Kong's legal system and are increasingly troubling its business, political and diplomatic communities.

It is the first time judges — who by convention don't comment on political or legislative matters — have discussed the issue publicly.