A bicycle pannier mounting arrangement for mounting a bicycle pannier to a bicycle, comprising: - a locking device for locking the bicycle pannier to an element of the bicycle, wherein the locking device comprises: - a first hook member comprising an inner seat surface being adapted for enclosing a portion of the element, - a second hook member, wherein the second hook member is pivotally connected about a pivot axis by a pivotal connection with respect to the first hook member such that the second hook member can be pivoted between an open position and a retaining position, whereby in the open position the element can be inserted into and removed out from the locking device, and whereby in the retaining position the first hook member and the second hook member are configured to enclose the element such that it is securely attached to the locking device, wherein the second hook member comprises a retaining portion for retaining the element when in the retaining position and a lever arm portion rigidly connected to the retaining portion, the lever arm portion extending beyond an outer peripheral surface of the first hook member, wherein the outer peripheral surface is provided on an opposite side of the first hook member with respect to the seat surface, and wherein the lever arm portion comprises a locking portion which is configured to pivotally lock the second hook member with respect the first hook member when in the retaining position by engaging the locking portion with cooperating locking means provided on the first hook member, which locking means are preferably provided on the outer peripheral surface of the first hook member, characterized in that, the pivotal connection is configured to be movable, as seen in a sectional plane being perpendicular to the pivot axis, such that the locking portion of the lever arm portion can be moved between an engaged position and a disengaged position with respect to the locking means. - a locking device for locking the bicycle pannier to an element of the bicycle, wherein the locking device comprises: - a first hook member comprising an inner seat surface being adapted for enclosing a portion of the element, - a second hook member, wherein the second hook member is pivotally connected about a pivot axis by a pivotal connection with respect to the first hook member such that the second hook member can be pivoted between an open position and a retaining position, whereby in the open position the element can be inserted into and removed out from the locking device, and whereby in the retaining position the first hook member and the second hook member are configured to enclose the element such that it is securely attached to the locking device, wherein the second hook member comprises a retaining portion for retaining the element when in the retaining position and a lever arm portion rigidly connected to the retaining portion, the lever arm portion extending beyond an outer peripheral surface of the first hook member, wherein the outer peripheral surface is provided on an opposite side of the first hook member with respect to the seat surface, and wherein the lever arm portion comprises a locking portion which is configured to pivotally lock the second hook member with respect the first hook member when in the retaining position by engaging the locking portion with cooperating locking means provided on the first hook member, which locking means are preferably provided on the outer peripheral surface of the first hook member, characterized in that, the pivotal connection is configured to be movable, as seen in a sectional plane being perpendicular to the pivot axis, such that the locking portion of the lever arm portion can be moved between an engaged position and a disengaged position with respect to the locking means.