There are special forms if you’re sending a tax return for a business partnership or non-resident company, or if you’re a trustee.
Type of tax returnForms and guidance notes Non-resident companiesSA700 Partnership
SA800 (including supplementary pages) Trust and estate
SA900 (including supplementary pages) Trustees of registered pension schemesSA970
If you need help you can:
get advice from a professional, such as an accountant
contact HMRC