In this article for the International Bar Association's Immigration and Nationality Newsletter (August 2011), Edward Wanambwa and Kate Minett comment on recent wide-ranging changes to the UK's immigration system, including how the immigration rules have become more flexible for high net worth investors and/or entrepreneurs  but more restrictive for "skilled workers". You can find their article on page 20, and there are other interesting items throughout the publication.

Immigration and Nationality Law News - August 2011.pdf