A hinge including first and second hinge members movable between an open position and a closed position, the first hinge member including a substantially cylindrical body portion having a longitudinal axis about which the second hinge member is rotatable to move the hinge between the open position and the closed position; the body portion housing biasing means having an end fixed relative to the second hinge member, the biasing means being in engagement with an adjustment member, the adjustment member being fixed with respect to the first hinge member; wherein the adjustment member includes a ratchet means to move the adjustment member in a first direction to increase the tension in the biasing means.