Metropolitan Police Commissioner Bernard Hogan-Howe wants to cut all crime. He says as far as he is concerned "all crime matters".
He added: "If we can cut all crime then we will end up with a happier and a more confidant London - a place people want to invest, people want to visit and I'm confidant we can do that in the future".
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The installation is the first in London by acclaimed British underwater sculptor Jason deCaires Taylor, part of the Thames festival.
Services through Kempton Park were suspended over the weekend due to an "obstruction on the line".
A leading sexual health clinic has apologised after mistakenly sharing the HIV positive status of hundreds of patients in an email.