We report several developments to the JET Tokamak survey spectroscopy beamline, which now supports a suite of X-ray, VUV and visible instruments, located in a radiation-shielded bunker outside the torus hall. The instruments have vacuum systems that are integrated into the tritium circuit, and are available for D-T experiments. The x-ray and VUV diagnostics have real-time data reduction. The proposed plasma impurity monitor for ITER is based on these developments.