  Here we describe the Red MSX Source (RMS) survey which is the largest,
systematic, galaxy-wide search for massive young stellar objects (MYSOs) yet
undertaken. Mid-IR bright point sources from the MSX satellite survey have been
followed-up with ground-based radio, millimetre, and infrared observations to
identify the contaminating sources and characterise the MYSOs and UCHII
regions. With the initial classification now complete the distribution of
sources in the galaxy will be discussed, as well as some programmes being
developed to exploit our sample.
