You can ipen an international SIPP. I am in the process of transferring benefits from an old DC arrangement into one. They are very flexible about drawingsl down income(providedyou are 55), up to 25% tax free and have said they will pay to my revolut GBP account.f your UK money is DC you should be able to access it - although it has become difficult to open a SIPP without a UK address and you need a uk bank account for payments I think. DB is difficult as you probably know because it’s hard to get advice needed to allow you to transfer out. I looked into it for a small one and gave up.
I only have an irish address.