VAT

[3CA]

if your earning on AW then you are self employed and need to be registered with the HMRC to complete your self assessments - by doing that you will have a UTR reference number and therefore fit into the first criteria

Details of how to tell HMRC are on this page.

If you started after 6 April 2015 but before 5 April 2016 you must submit an online tax return before 31 January 2016 to avoid any penalties.

If you started before 6 April 2015 you will already be liable to penalties but it may be possible to have them cancelled. If you're in this situation you'll need an accountant - HMRC aren't very sympathetic.
[url=https://www.gov.uk/working-for-yourself/overview][/url]