  We present angle resolved photoemission spectroscopy measurements of the
surface states on in-situ grown (111) oriented films of Pb$_{1-x}$Sn$_{x}$Se, a
three dimensional topological crystalline insulator. We observe surface states
with Dirac-like dispersion at $\bar{\Gamma}$ and $\bar{M}$ in the surface
Brillouin zone, supporting recent theoretical predictions for this family of
materials. We study the parallel dispersion isotropy and Dirac-point binding
energy of the surface states, and perform tight-binding calculations to support
our findings. The relative simplicity of the growth technique is encouraging,
and suggests a clear path for future investigations into the role of strain,
vicinality and alternative surface orientations in (Pb,Sn)Se compounds.
