I & my spouse are tax resident in Belgium, citizens with a home there. We file returns in Belgium on our world wide income. My main income is state pension from Belgium and interest income from savings. We have EU pre settlement status in the UK as well . In the tax year 2023-24 we spent more than 183 days in our flat in UK. I was advised that if my UK income was under 12500 GBP per head (which is the case) then (HMRC prefers) and that there is no need for us to do any self assessment . The check tool on HMRC does not have anything specific for "dual resident" residents like us. Can HMRC advise if we need to do self assessment for 2023-24 tax year ? The deadline we understand is 31 October.