Daly of "Cagney & Lacey" (4)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
tyne
(Other definitions for tyne that I've seen before include "Gateshead's river" , "Serve as evidence for" , "River at Gateshead" , "River running through Newcastle" , "River of NE England" .)