Mansion Tax: A billion pound levy on London – Zoopla

"How can it be right that the foreign buyer last month of a £140 million flat in Westminster will pay just £26 a week in council tax — the same as the average-value property in that council area?

Rather than benefit the working majority, a mansion tax could, in fact, do the opposite, says Tony Hennessey... Imagine for a moment that it is June 2015.

The Liberal Democrat's party president has come out swinging with yet another angle on the mansion tax.