Hi joanne,
Depending on the year of the return, and how it was submitted, you may be able to access a previously filed return.
Log into your Personal Tax Account, then select Self Assessment within the Self Assessment tile; select the 'More details about your Self Assessment returns and payments, then ‘View your tax year overview’.
Select the View Return, then select View / print / store your return onto your local drive.
If you cannot view your return following this method, contact us by webchat or post here:
Self Assessment: general enquiries
Thank you.