What about them? They are, at best, an organization that tests samples and catch the dumbest domestic athletes, with the sports federation's permission. UKAD has no authority to open cases, no authority to select athletes, no authority to select the tests to run. It's all up to the sports federation or/and the event promoter. That's how the system works. I know WADA and the domestic agencies sound pretty awesome and complicated, but the system is a farce.
Still, it's important to remember that UKAD does not directly handle British pro cyclists. Very generally speaking, the UCI alone does the athlete selection, test selection, routing of samples and never opens cases unless the rider is somehow unpopular at the UCI. In the unlikely instance a new case is opened, UKAD is eventually involved not before BC would have a chance to make it all go away.