UK Non-Resident Tax Advice for Remote Worker

I am a British citizen employed by a UK company on PAYE, but I have been living and working remotely outside the UK (in Turkey) since April 2023. My remote work was by personal choice, not as an official assignment or secondment from my employer. I need an experienced UK tax advisor to review my residency status, advise whether any of my PAYE tax can be reclaimed as a non-resident, and guide me on the process (P85, Self Assessment, documentation, and correspondence with HMRC).
Please respond only if you have real experience with expat, non-resident, or international remote worker tax cases. I am looking for someone who can explain my position, assess my documents (payslips, P45s, travel records), and possibly support future filings or appeals if needed.