Double taxation or Self Assessment

I live in the netherlands but am a UK citizen. I don't believe I am considered a UK resident for tax purposes. I have recently received a UK private pension fund as a one-off payment and UK tax has been taken off with an emergency tax code 1257L. Am I right in thinking I need to complete the Netherlands DT individual form to reclaim the tax and will then pay the tax in the Netherlands? I want to check that I don't need to send in a UK Self Assessment tax return? I do not have any other UK Income, except my State pension. Could I also check what the process is from HMRC once you receive the DT form - is the refund processed after the tax year ends? So 2025? Some clarification would be great. Thanks

Hi,
You can see guidance here:
Tax on your UK income if you live abroad
Thank you.