a fixing device for securing an elongate article such as a conduit to a support structure such as a wall of a cableway or cable riser , includes a housing provided with opposed hooks for securing the housing to the support structure by relative movement and then locking in place of the hooks . after the housing is mounted , the elongate article can be received in a u - shaped jaw provided on the housing , and a ratchet arm pivoted and latched to the housing , around the elongate article , trapping the elongate article in the jaw . freeing the elongate article and dismounting the fixing device involve a reversal of these steps .