<p>A castor comprises a wheel 14 rotatably mounted to a body member 12 by a spindle 20 which extends from a spindle mount 24 carried by the body member into a closed bore 27 in a central boss 26 of the wheel. A shroud 29 shrouding the boss 26 and/or the spindle mount 24 bridges the axial gap therebetween and extends the seepage path for grease provided between the closed bore 27 of the boss and the spindle 20.</p>
