They are developing a completely new type of solid-state light source called the Polarization Synchrotron. The machine is based on the controversial theory of displacement current, which has no inertial mass and therefore may be moved faster than the speed of light.
The Polarisation Synchrotron could theoretically allow us to send faster-than-light transmissions beyond the solar system, provide secure telecommunications without encryption, improve the technology available for semiconductor processing, enable radio transmissions of far greater distance ( diminishing at 1/distance, as opposed to 1/distance squared), provide a vastly tunable (infrared to ultraviolet), intense light source, and allow for ground-based light sources based on the same principles as a pulsar.
Initial tests took place on the rooftop of Oxford's physics department, and the results indicated that electromagnetic signal decay did take place more slowly than expected, although not quite in line with predictions. Further experiments will be carried out over the next few months at a local airfield, where the team will be able to analyze the results from a greater distance.
It appears that Maxwell's Equations - the fundamental equations which govern elecromagnetism - might be due for a rewrite once all the dust settles...