I hope the attached photograph will now explain matters.
The DMU is heading into platform(no 1) adjacent to Northernhay Park. Platform 2 is the next one which is on the downside for St David’s. By the way this line is signalled for bi-directional working and does see regular use as such. Platform 3 is the up line on which the the photograph of the St James’ Park bound DMU has arrived. Platform 4 is now not used and the tracks are heavily over grown with trees and bushes. The platform had a run round loop and believe it or not it is still in situ. The exception is that it cannot now be accessed as the PW Department put in a plain line ages ago taking out the access point as you approach Central under the first overbridge. The crazy thing is that a ground signal installed in connection with the 1985/1986 MAS scheme was still lit even though the point was disconnected. Actual use of platform form finished in 1973 when the cross over from the down line to the up line was removed in 1973.
By the way the photograph of the DMU is interesting. The bay platform has not had a scheduled arrival/departure for many a year. In the summer of 2013 Devon County Council paid for extra Sunday trains to give the Exmouth line a 30 minute service on Sundays. This was the first service to use the bay for years. The service is in operation again this year. Crazy thing about the Sunday extras is that in the first year they did not serve quite a few of the intermediate halts, St James’ Park and Polsloe Bridge for example. Dave Many thanks David