Travel reimbursement

Hello I am an academic, I was invited to visit an international university and they reimbursed me directly for my plane and hotel fees. Should I declare this as a sole trader/ but put no profit/ travel expenses? Thanks in advance

Hi
If this was NOT in relation to either a trade or employment, and this was just a straight reimbursement of travel etc, then this would not be taxable income and would not need to be declared.