A method of suspending a pipe from a support, the method comprising: providing a connecting device and a support comprising a main part defining an aperture, the connecting device comprising a securing arrangement for securing the connecting device to the pipe, and an attaching arrangement for attaching the connecting device to the support; wherein the attaching arrangement comprises a first projecting formation for engaging a first face of a portion of the support, a second projecting formation for engaging a second face of said portion of the support, and a bridging element extending between the first projecting formation and the securing arrangement; wherein the bridging element fixedly mounts the securing arrangement on the attaching arrangement; wherein the attaching arrangement further includes a spacer portion extending between the first and second projecting formations, a gap being defined between the first and second projecting formations; wherein the method comprises inserting the second projecting formation through the aperture in the support, and thereafter rotating the attaching arrangement to an attaching position about an axis of rotation extending through the first and second projecting formations, to receive said portion of the support between the first and second projecting formations so that the first and second projecting formations respectively engage the first and second faces, thereby attaching the connecting device to the support; and wherein the method further comprises securing the pipe to the securing arrangement; characterised in that the spacer portion has a stop formation to prevent rotation of the attaching arrangement in one direction, the stop formation comprising a region of the spacer portion configured to engage the support when the attaching arrangement is rotated in the aforesaid direction. providing a connecting device and a support comprising a main part defining an aperture, the connecting device comprising a securing arrangement for securing the connecting device to the pipe, and an attaching arrangement for attaching the connecting device to the support; wherein the attaching arrangement comprises a first projecting formation for engaging a first face of a portion of the support, a second projecting formation for engaging a second face of said portion of the support, and a bridging element extending between the first projecting formation and the securing arrangement; wherein the bridging element fixedly mounts the securing arrangement on the attaching arrangement; wherein the attaching arrangement further includes a spacer portion extending between the first and second projecting formations, a gap being defined between the first and second projecting formations; wherein the method comprises inserting the second projecting formation through the aperture in the support, and thereafter rotating the attaching arrangement to an attaching position about an axis of rotation extending through the first and second projecting formations, to receive said portion of the support between the first and second projecting formations so that the first and second projecting formations respectively engage the first and second faces, thereby attaching the connecting device to the support; and wherein the method further comprises securing the pipe to the securing arrangement; characterised in that the spacer portion has a stop formation to prevent rotation of the attaching arrangement in one direction, the stop formation comprising a region of the spacer portion configured to engage the support when the attaching arrangement is rotated in the aforesaid direction.