Abstract: A neck brace (10) comprises an impact surface (39,55) adjacent the neck of a wearer of the brace (10) that it is spaced from a helmet (42) and that is configured to limit movement of the helmet by contacting an underside (46) of the helmet, a bearing surface (15,35) bearing on the wearer's body; and a resilient structure (12) between the impact surface (39,55) and the bearing surface (15,35) for transferring impact loads from the helmet (42) on the impact surface, to the wearer's body via the bearing surface. The brace (10) further includes restraining means (58) that is attachable to the rear of the structure (12) with a releasable clip mechanism (66) and to the helmet (42) to inhibit movement of the helmet. The restraining means is in the form of a tether (58) that is attached to the helmet (42) at two spaced locations and that passes with clearance through an aperture in an anchor element (62,64), to allow the helmet (42) to be moved freely while the tether (58) slides through the aperture.