I've been approached by someone to submit their SA return for a new venture which covered 4 months of the tax year. Although I would have no reason to doubt their figures, I do like to go through paperwork to check myself. However they want to keep costs low in theoir first year and just want me to submit their figures. It would be good money for what is essentially less than an hours filing. Given that there are people who act as a filing bereau only, is it acceptable or should I decline because I haven't seen any paperwork?