[DanBC]

London hotels don't pay extra taxes. The taxes that have been proposed - £1 per night - seem modest.

http://www.telegraph.co.uk/travel/destinations/europe/united...

https://www.theguardian.com/uk-news/2015/jan/07/london-touri...

This is, as the local authority says, partly to clean and police and etc areas that are very popular with tourists.