Veronica Kwok

If my self-employed business required certain professional and training update knowledge, can I treat my membership fee, insurance fee and course training expenses as my self-employ business expenses?

May I ask if the case I haven't made any income from my hobby business at start up, it incurred some tiny expenses for the year, should I just fill the figure in SA103s? By the way, I would like to make the voluntary class 2 national insurance contribution, should I fill up the self-employment (short) and to mark "x" in box 36?