Thanks: explanation accepted. 
I was using Komoot and had great difficulty in forcing part of longer route to use this path.   I now see the problem likely to be my  particular route, since other routes within komoot do use this path. 

The junctions at S and N  are the only viable access.  Path was designed as separated from RW-RR. May be possible for ped to squeeze through wall into Annesley, but unlikely with bike. 
