I am currently employed part-time in the public sector on PAYE, lower rate. I've just agreed to take on a tiny amount of work (probably 3 days max) for another public sector organisation, who will be paying me a daily rate directly. Is it just as simple as sticking this down on a tax return at the end of the year? Does the form have details for expenses as well, as I'll be using quite a lot of petrol? I assume I don't need to register as self employed? I am aware that these are very basic questions but this work came and found me, rather than the other way round, and I've only ever been on PAYE
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