"increase the resources of HM Revenue and Customs to strike at tax cheats"
Whether this echo from the left comes before or after much the same faint and feeble echo from the right, is neither here nor there. The only problem addressed in statements of this sort is one of, "How am I going to get into the newspapers?"
If there are such things as "tax cheats" their numbers ebb and flow in line with personal taste, and are never likely to form a sizeable percentage of the tax-efficient - takers & keepers - who rely upon a National Economy but fail to support it. These 'tax cheats' are more Vampire than parasite, and taken as a whole the parasitic 'tax-efficient' require oversight, for their tendency is to make loaves from all the grain and rely upon the Nation State to conjure-up the seed to keep the beneficent cycle going.
The fundamental laws governing commerce and taxation need redrafting to ensure that the host economy is supported.
In addition to this the basic business ethics also need to be reconfigured.
Steps have been taken in Business Schools(1) and their Graduates(2)...
-1
http://businessethicsblog.com/2012/07/03/a-business-ethics-syllabus/
-2
http://site.business-ethics-pledge.org/
...and wise old business heads...
http://www.billgeorge.org/page/as-a-servant-leader-you-can-change-the-world
Something also worthy of consideration...
Tax turnover to tackle avoidance
http://www.guardian.co.uk/business/tax-gap-blog/2009/feb/04/3