[jwblackwell]

The best thing you can do would be to either call the respective tax authorities (here in the UK that's HMRC) or seek professional advice. You situation likely isn't that complicated or hard to sort out but you don't want to screw up based on the advice of an anonymous HN user.

If you ring up the tax man asking to pay tax I'm pretty sure they will be able to help :) If you think you can save money by reorganising finances then get an accountant.