I have been resident in Australia for 30 years with no UK income. In Tax Year 2023/ 24 I took a lump sum from a private pension and was taxed at the emergency rate. I applied for and received a rebate. With the lump sum I invested in a property with my brother and next year will be declaring that rental income. As I have already established my tax residency status in Australia with the tax rebate do I still have to obtain a Certificate of Residency and Overseas Tax Relief when I do my self assessment return?