A locking gimbal for automatically locking a gimballed object against motion arising from an external force applied thereto, the locking gimbal comprising: a first object pivotally connectible to a support, and being pivotable about a first pivot axis (P F), wherein the centre of gravity (CG F) of the first object is spaced from the first pivot axis (P F), and further wherein the first object defines a first reference axis (A RF) passing through the first pivot axis and the centre of gravity of the first object; a second object having a centre of gravity (CG S) movable along an arc centred substantially at a second axis (P F) and defining a second reference axis (A RS) passing through the second axis and the centre of gravity of the second object, the first and second objects being movable relative to one another between a first aligned condition, wherein the first and second reference axes are substantially aligned, and a second displaced condition, wherein the first and second reference axes are angularly displaced relative to one another; a locking member fixed in position relative to the support; a connector, having a first end connected to a locking formation and a second end connected to the second object, wherein pivotal displacement of the first object relative to the second object to the displaced condition in a first direction drives movement of the connector, consequentially forcing at least a portion of the locking formation from a disengaged position to an engaged position, wherein the locking member arrests further pivotal displacement of the first object in such first direction via the locking formation; characterised in that the locking formation is operatively movable relative to both the first and the second objects. a first object pivotally connectible to a support, and being pivotable about a first pivot axis (P F), wherein the centre of gravity (CG F) of the first object is spaced from the first pivot axis (P F), and further wherein the first object defines a first reference axis (A RF) passing through the first pivot axis and the centre of gravity of the first object; a second object having a centre of gravity (CG S) movable along an arc centred substantially at a second axis (P F) and defining a second reference axis (A RS) passing through the second axis and the centre of gravity of the second object, the first and second objects being movable relative to one another between a first aligned condition, wherein the first and second reference axes are substantially aligned, and a second displaced condition, wherein the first and second reference axes are angularly displaced relative to one another; a locking member fixed in position relative to the support; a connector, having a first end connected to a locking formation and a second end connected to the second object, wherein pivotal displacement of the first object relative to the second object to the displaced condition in a first direction drives movement of the connector, consequentially forcing at least a portion of the locking formation from a disengaged position to an engaged position, wherein the locking member arrests further pivotal displacement of the first object in such first direction via the locking formation;