When they have the time they will be contacting these people who have hidden their money offshore. I wrote about this sometime ago warning that a lot of people were going to be contacted by the Revenue's Special Compliance Office - based in Manchester. The Revenue has forced Northern Ireland banks to hand over details of funds invested offshore for their customers. Since that article the inspectors have been so busy working their first batch of lucrative cases that few new approaches have been made, but they haven't gone away. Now that their first cases are being settled the Revenue has time to open the bulging cupboards.
Interest paid on savings in the Isle of Man is paid without tax being deducted.
It is paid 'gross'. This is legitimate as long as you declare the interest to the Inland Revenue and pay the tax due. Otherwise you are sitting on a time-bomb. Move now and you will suffer less. Once you decide to confess you will undergo a rigorous tax investigation.