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 (R) 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 (R) 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. <EOS>