Note headline; here is the only time this Reuters article refers to the “parliament was slipping into the Thames” issue:

[Professor John Burland of Imperial College London] dismissed concern in the media that parliament was slipping into the Thames, while the commission’s spokesman denied the walls around the palace were suffering from a particularly bad subsidence problem causing Big Ben to lean. –via London’s Big Ben is leaning, parliament sinking: reports.

A Reuters spokesperson dismissed concerns in academia that exaggerated headlines designed to generate more clickthroughs are causing journalistic integrity to suffer.