Lighting apparatus includes a casing (401) moulded from an electrically insulating and thermally conductive plastics material. It also includes a plurality of light emitting diode devices (501) configured to emit light in response to receiving electrical power. A plurality of metallic assemblies (601) are provided, in which each one provides electrical power to a respective one of the light emitting diodes. In addition, these assemblies conduct heat away from their respective light emitting diode to the casing. They are directly supported by the casing and allow each light emitting diode to be individually replaced.