Hi,
Your whole tax return must be submitted on the same format, ie paper or online.
If you are able to verify your identity and obtain a government gateway user ID and password, you can buy commercial tax return that allows you to submit the tax return online, including the residence section.
A list of commercial providers can be found at:
Self Assessment commercial software suppliers.
If you cannot verify your identity, you will need to submit the whole tax return on paper.
Thank you.