I thought I would offer some advice, based on my own experience, regarding the Inland Revenue. If you are just starting out working for yourself, or working while holding down another job, then you should get yourself registered with an accountant. It doesn't matter if you're not doing much work at the present, if any. Find an accountant (someone who works on his own at home is suitable), he will get you to sign a form which he will send to the IR, which authorises him to act on your behalf, he will not (should not) charge you any money at the moment. From then on you are 'known' to the tax office. If the IR become aware of you (or somebody dobs you) and you are known they will not bother you, after all, you are not doing anything illegal. However, if you are not known, then they will come after you. Always remember; with the Inland Revenue you are guilty and have to prove you are not. This happened to me some years ago. And I was handed down a bill of £2000. I went straight out and sorted myself an accountant, and he got the bill down to £1300. When you are with an accountant, he will receive a copy of any communication you get from the IR. And, if there are any queries, he will handle the IR for you. It's always money well spent in my opinion.