A gearing assembly comprising a rotary input member, a rotary output member and a gearing arrangement between the input member and the output member selectively engageable to effect a driving engagement between the input member and the output member through at least a first torque connection having a first gear ratio and a second torque connection having a second gear ratio, wherein one of the rotary input member and the rotary output member comprises a first shaft, the first torque connection comprises a first dog clutch comprising a dog hub comprising a hub set of teeth and a surrounding dog ring comprising a ring set of teeth, the hub and ring sets of teeth being radially projecting and mutually engageable, and the second torque connection comprises a second dog clutch, the dog hub being mounted on the first shaft so as to allow axial movement of the dog hub relative to the shaft and dog ring with rotation of the dog hub relative to the shaft being resisted such that when the dog hub is axially aligned with the dog ring, the hub and ring sets of teeth engage and rotational drive may be transferred between the first shaft and the dog ring, the hub and ring sets of teeth of the first dog clutch being dimensioned and spaced so that upon axial movement between the dog hub and the dog ring with the sets of teeth appropriately in register with one another, the teeth in each set may pass through spacings between the teeth in the respective other set, so that the dog hub is moveable between a first disengaged position with the hub set of teeth axially spaced in a first direction from the ring set of teeth, a first engaged position with the hub set of teeth aligned and engaged with the ring set of teeth, and a second disengaged position with the hub set of teeth axially spaced in a second direction from the ring set of teeth, characterised in that the gearing arrangement comprises a first planetary gear stage having fixed ring gear and a sun gear which comprises the dog ring of the first dog clutch. wherein one of the rotary input member and the rotary output member comprises a first shaft, the first torque connection comprises a first dog clutch comprising a dog hub comprising a hub set of teeth and a surrounding dog ring comprising a ring set of teeth, the hub and ring sets of teeth being radially projecting and mutually engageable, and the second torque connection comprises a second dog clutch, the dog hub being mounted on the first shaft so as to allow axial movement of the dog hub relative to the shaft and dog ring with rotation of the dog hub relative to the shaft being resisted such that when the dog hub is axially aligned with the dog ring, the hub and ring sets of teeth engage and rotational drive may be transferred between the first shaft and the dog ring, the hub and ring sets of teeth of the first dog clutch being dimensioned and spaced so that upon axial movement between the dog hub and the dog ring with the sets of teeth appropriately in register with one another, the teeth in each set may pass through spacings between the teeth in the respective other set, so that the dog hub is moveable between a first disengaged position with the hub set of teeth axially spaced in a first direction from the ring set of teeth, a first engaged position with the hub set of teeth aligned and engaged with the ring set of teeth, and a second disengaged position with the hub set of teeth axially spaced in a second direction from the ring set of teeth, characterised in that the gearing arrangement comprises a first planetary gear stage having fixed ring gear and a sun gear which comprises the dog ring of the first dog clutch.