Fraction of the sources which are recovered as a function of their injected angular separation from the primary source. Top: vanilla pipeline. Bottom: image-subtraction pipeline. The colours correspond to the magnitude range of the primary sources into which the sources were injected. The shaded areas enclose the 1 errors in the recovered fraction. The shaded grey areas under the coloured areas correspond to injection into the real data, (the coloured area corresponds to injection into the mock data).