King's yard at Gatehead was between the Redheugh bridge and the King Edward VII railway bridge.
In this photo HMS ACUTE, an Algerine Class frigate, is ready for breaking with another warship well advanced astern.
EDIT: BrianH has since identified these two vessels as being WELCOME M386 (ahead) and WAVE M385 (mostly demolished)
Also the yard was CW Dorkin which shared the same stretch of river as JJ King.