Research by QMUL and BAE Systems has been published showing the design, fabrication and performance of a flat volumetric Luneberg lens using spatial transformations and composite materials. A Luneberg lens is a device that allows incoming plane waves to be focussed to a point or, conversely, converts out-going waves from a point source to plane waves. This device is circular for surface waves and spherical for three-dimensional systems. However, spatial transformations can be used to reduce the volume and weight of the 3D device, making it flat (a thin cylinder). Such a device has been designed and fabricated using the all-dielectric approach pioneered at QMUL; its performance is compared with a standard spherical lens in the recent paper, with positive results.