Described by its makers as 'the world's widest, thinnest, longest light bulb', Amber & Green's Flatlite (pictured above) can be fi tted under surfaces, around columns, inside arches and anywhere else where traditional light sources are difficult to install. It comprises processed phosphor crystals, sandwiched between a thin aluminium electrode and a clear top electrode. When connected to an AC power source, the current causes the crystals to glow. The Flatlite material is simply pulled off a roll, cut to size and secured to a surface using adhesive or acrylic. The company estimates that it is about 6 per cent of the cost of running neon or fluorescent lights and 18 per cent of the cost of an LED strip. It can be used instead of fluorescent tubes to back-light mirrors, pictures or internal windows. Available in aqua or white, the Flatlite also comes in an outdoor version, protected inside a plastic extrusion. Telephone 0208 288 3565 for more information.