Abstract: A lamp comprises a battery housing (60), a lens body (70) rotatably connected to the housing (60) and a bulb holder unit (10) which is rotatably fast with the lens body (70) in the assembled lamp. The bulb holder unit (10) is produced as a plastics moulding and is provided with terminals (38,58) which are so arranged with respect to the battery terminals (62, 64) that the lamp can be switched on and off by rotation of the lens body (70).