Tax refund security check mor then 6 mouths

Hello. I have been waiting for my tax refund for over 6 months. HMRC does an extra security check. How much longer do I have to wait? A new tax year begins in April

Hi Adam2024,
We are sorry for the delay in receiving your refund.
To check on the progress you will need to contact HMRC:
Self Assessment: general enquiries
Thank you.