If you are not submitting your Self Assessment return online, you need to file your paper return for previous tax year by the end of October if you wish HM Revenue & Customs to calculate your tax and tell you how much you need to pay before 31 January. If you received notice to complete a tax return after 31 July, refer to it to check your deadline. You may incur a penalty if you fail to file before the appropriate date!
Alternatively give me a call! I can help you to file your return online. There’s still time to collate your information for filing prior to 31 January 2011.