Add paragraph on proposed remedies to tax avoidance and evasion.

Given that there is a current tax gap (between tax due and tax recieved by the exchequer) of [£120 billion](http://www.taxresearch.org.uk/Documents/FAQ1TaxGap.pdf), we propose the introduction of [country-by-country reporting](http://www.taxresearch.org.uk/Documents/CBC.pdf) and a [general anti-avoidance principle](http://www.taxresearch.org.uk/Blog/2012/06/20/why-we-need-a-genuine-general-anti-avoidance-principle-to-beat-tax-abuse-2/), in order to ensure that everyone living or doing business in the UK pays all the tax they owe.