Well, the governments excuse for turning a blind eye to the banks tax evasion has always been that they don't want to turn business away.
The Guardian reported this morning, however, the assistant chief minister for Jersey has warned that the last 5 years have become a pain in the arse for them with new regulatory acts being passed making it less attractive to those who use it's banking services. So, they may declare independence.
http://m.guardian.co.uk/uk/2012/jun/26/jersey-threatens-independence-tax-backlash?cat=uk&type=article
Have the UK perhaps shot themselves in the foot?