Electrician Job - Cravenby, WC, 7493

We moved into 67 bertha street Cravenby. 1 room light does not work. When we took the light fitting off it seems as though the black wire is missing. There was only a red wire sticking out hence why the light does not work. I need the light to be working. The black wire could have just went back up in the fitting however I cannot see it with the eye.