This photo is a zoomed in view of the previous one. It clearly shows the signal numbers and signal profiles.
Interesting is the track in the left distance, which looks a lot like it originally joined to what became the traps at the end of the Down Goods. I'm not aware of these being anything other than traps during the life of the panel (1968 onwards), so this must be remnants of the mechanical layout. (Another similar photo that was with this one has evidence of being before 1976).