Hi Kevin Lloyd
As a non resident taxpayer, you need to purchase 3rd party commercial software, that includes the residence section.
You complete the full tax return provided by the software provider and submit it electronically.
There is a list of providers at (
Self Assessment commercial software suppliers).
The commercial software suppliers can submit one or more elements of the tax return and supplementary pages to HMRC.
In each case HMRC will accept valid tax returns, supplementary pages and attachments for the products listed.
HMRC cannot recommend or endorse any one product or service over another and will not be responsible for any loss, damage, cost or expense in connection with using this software.
Thankyou.