A wellhead assembly, comprising: a wellhead having a bore extending therethrough, the bore having a first profile region; and a tubular hanger adapted to secure to the wellhead, the tubular hanger comprising: a tubular hanger body; a first expandable member carried on the tubular hanger body and adapted to expand outward to engage the first profile region of the wellhead, the first expandable member having a first angled surface; a moveable member carried on the tubular hanger body, the moveable member having a second angled surface facing the first angled surface of the first expandable member, wherein the first angled surface and second angled surface are adapted to cooperate to produce a mechanical advantage to drive the first expandable member outward and the moveable member inward to wedge the moveable member between the first expandable member and the tubular hanger body as the moveable member is driven against the first expandable member; and characterised in that the assembly further comprises a second expandable member disposed on the tubular hanger body, the second expandable member being adapted to expand outward to engage a second profile region in the bore of the wellhead that is adapted to receive the second expandable member, wherein the second expandable member is adapted to restrict axial movement of the tubular hanger upon engagement with the second profile region. a wellhead having a bore extending therethrough, the bore having a first profile region; and a tubular hanger adapted to secure to the wellhead, the tubular hanger comprising: a tubular hanger body; a first expandable member carried on the tubular hanger body and adapted to expand outward to engage the first profile region of the wellhead, the first expandable member having a first angled surface; a moveable member carried on the tubular hanger body, the moveable member having a second angled surface facing the first angled surface of the first expandable member, wherein the first angled surface and second angled surface are adapted to cooperate to produce a mechanical advantage to drive the first expandable member outward and the moveable member inward to wedge the moveable member between the first expandable member and the tubular hanger body as the moveable member is driven against the first expandable member; and characterised in that the assembly further comprises a second expandable member disposed on the tubular hanger body, the second expandable member being adapted to expand outward to engage a second profile region in the bore of the wellhead that is adapted to receive the second expandable member, wherein the second expandable member is adapted to restrict axial movement of the tubular hanger upon engagement with the second profile region. a tubular hanger body; a first expandable member carried on the tubular hanger body and adapted to expand outward to engage the first profile region of the wellhead, the first expandable member having a first angled surface; a moveable member carried on the tubular hanger body, the moveable member having a second angled surface facing the first angled surface of the first expandable member, wherein the first angled surface and second angled surface are adapted to cooperate to produce a mechanical advantage to drive the first expandable member outward and the moveable member inward to wedge the moveable member between the first expandable member and the tubular hanger body as the moveable member is driven against the first expandable member; and characterised in that the assembly further comprises a second expandable member disposed on the tubular hanger body, the second expandable member being adapted to expand outward to engage a second profile region in the bore of the wellhead that is adapted to receive the second expandable member, wherein the second expandable member is adapted to restrict axial movement of the tubular hanger upon engagement with the second profile region.