A light fitting comprising: a first part for connecting to a surface; the first part comprising: a first electrical connector; and a first mechanical connector; a second part for connecting to a light; the second part comprising: an electrical interface configured to be releasably coupled to a power circuit for a light; a second electrical connector; wherein the second electrical connector is arranged to be electrically connected to the electrical interface for supplying power to the light; and a second mechanical connector arranged to releasably engage the first mechanical connector; wherein the first electrical connector and second electrical connector are arranged to engage to provide an electrical connection between the first and second parts (16, 18) as the first and second mechanical connectors engage; the light fitting is arranged such that an electrical connection between the first and second parts (16, 18) can be provided when the second part is at any of a plurality of positions relative to the first part; and the first and second mechanical connectors comprise a screw thread and define a plurality of discrete relative positions in which a light can be supported with the first part and second part mechanically and electrically connected, and the plurality of discrete relative positions are arranged to define a plurality of different distances between the second part and a surface on which the first part is arranged to be connected. a first part for connecting to a surface; the first part comprising: a first electrical connector; and a first mechanical connector; a first electrical connector; and a first mechanical connector; a second part for connecting to a light; the second part comprising: an electrical interface configured to be releasably coupled to a power circuit for a light; a second electrical connector; wherein the second electrical connector is arranged to be electrically connected to the electrical interface for supplying power to the light; and a second mechanical connector arranged to releasably engage the first mechanical connector; wherein an electrical interface configured to be releasably coupled to a power circuit for a light; a second electrical connector; wherein the second electrical connector is arranged to be electrically connected to the electrical interface for supplying power to the light; and a second mechanical connector arranged to releasably engage the first mechanical connector; wherein the first electrical connector and second electrical connector are arranged to engage to provide an electrical connection between the first and second parts (16, 18) as the first and second mechanical connectors engage; the light fitting is arranged such that an electrical connection between the first and second parts (16, 18) can be provided when the second part is at any of a plurality of positions relative to the first part; and the first and second mechanical connectors comprise a screw thread and define a plurality of discrete relative positions in which a light can be supported with the first part and second part mechanically and electrically connected, and the plurality of discrete relative positions are arranged to define a plurality of different distances between the second part and a surface on which the first part is arranged to be connected.