Use form DT/Individual (Germany) to apply for relief at source from UK Income Tax and to claim repayment of UK Income Tax under the terms of a Double Taxation treaty. This form applies to residents of Germany receiving pensions, purchased annuities, interest or royalties arising in the UK. The form is in English with a copy in German. You need to complete both copies.
CNR DT Guidance Notes - Residency - Double Taxation Guidance Notes
Use form for information on double taxation arrangements.