INTM345430 | DT applications and claims: Overview of DT Agreements
From HM Revenue & Customs · International Manual
What is the statutory authority for drawing up DTAs and implementing them
The Double Taxation Agreements made by the Government of the United Kingdom are authorised by ICTA88/S788(1) to (3) and ICTA88/S791 and S828 and ITA07/S1014. The legislation gives the Commissioners for Revenue and Customs power to make regulations generally to carry out the provisions of the DTAs.
These regulations are contained in SI1970/488.