Yes John Walker, that top one is at the top of the stairs (in the image below) from the brick archway passage in the previous post.
The story was that they came out in the Granville Gardens, which lines up. The entrance was said to be along the side of Victoria Road. After a long search for a good image (Granville Gardens), there is nothing there? To put it at the back by Truro Road, makes no sense and I have processed the history of this plot from 1920-1970 with all sorts of uses.
45 years ago, a friend was caring for a former Police Sergeant in sandwich. He knew everything about the Tunnels. He said that it came out in the basement of the Granville Hotel. Best guess perhaps into the Ballroom (bombed out).
Nobody has actual proof of where it came out yet, so we all have an idea?
Final image is actual plan showing Tunnels and yellow marks for these two doors.
So until technology shows us more, we do not know (yet).