In October, Prof John Burland from Imperial College London oversaw the building of the [Palace of Westminster] car park, said the tower was leaning, but it would not be a major concern for at least 10,000 years.:
"There's no such thing as an old building that isn't cracked. In fact they're beneficial because the building moves thermally more than is caused by the Jubilee Line and the movements concentrated around the cracks and, if they didn't, there'd be cracking elsewhere."
Moves thermally more that is caused... what?
Sounds more like no major cause for concern is going to get anything done on my watch. IIRC (I appreciate the tower isn't a brick or stone structure) but:
If the building moves past half a brick's thickness, it is dedded.
Any ideas how that applies to cast iron?