A caster assembly comprising: a caster wheel having an outer surface; a wheel support coupled to the caster wheel to support the caster wheel for rotation about a rotational axis; and a brake assembly comprising a brake having a cammed wheel engaging surface shaped to engage the outer surface of the caster wheel and a brake actuator to move the brake relative to the caster wheel from an unbraked position to a braked position in which the brake limits rotation of the caster wheel about the rotational axis, wherein the cammed wheel engaging surface is arranged to articulate relative to the wheel support upon the caster wheel rotating about the rotational axis after the brake is initially placed in the braked position such that the cammed wheel engaging surface more deeply engages the caster wheel with rotation of the caster wheel about the rotational axis, and wherein the brake assembly further comprises a brake shoe with the brake being pivotally connected to the brake shoe about a first pivot axis such that the cammed wheel engaging surface is arranged to articulate about the first pivot axis relative to the wheel support, wherein the cammed wheel engaging surface comprises opposing cammed sections (100, 102) located at a first distance from the first pivot axis and an initial contact section located at a second distance from the first axis, the second distance being less than the first distance, wherein the brake is arranged in an initial position about the first pivot axis relative to the brake shoe before braking so that, when the brake is initially placed in the braked position, the initial contact section is configured to engage the outer surface of the caster wheel and the cammed sections (100, 102) are configured to be spaced from the outer surface of the caster wheel, and thereafter, upon the caster wheel further rotating about the rotational axis, one of the cammed sections (100, 102) engages the caster wheel; characterized in that the brake shoe is pivotally coupled to the wheel support about a second pivot axis such that the brake pivots about the second pivot axis when moving from the unbraked position to the braked position. a caster wheel having an outer surface; a wheel support coupled to the caster wheel to support the caster wheel for rotation about a rotational axis; and a brake assembly comprising a brake having a cammed wheel engaging surface shaped to engage the outer surface of the caster wheel and a brake actuator to move the brake relative to the caster wheel from an unbraked position to a braked position in which the brake limits rotation of the caster wheel about the rotational axis, wherein the cammed wheel engaging surface is arranged to articulate relative to the wheel support upon the caster wheel rotating about the rotational axis after the brake is initially placed in the braked position such that the cammed wheel engaging surface more deeply engages the caster wheel with rotation of the caster wheel about the rotational axis, and wherein the brake assembly further comprises a brake shoe with the brake being pivotally connected to the brake shoe about a first pivot axis such that the cammed wheel engaging surface is arranged to articulate about the first pivot axis relative to the wheel support, wherein the cammed wheel engaging surface comprises opposing cammed sections (100, 102) located at a first distance from the first pivot axis and an initial contact section located at a second distance from the first axis, the second distance being less than the first distance, wherein the brake is arranged in an initial position about the first pivot axis relative to the brake shoe before braking so that, when the brake is initially placed in the braked position, the initial contact section is configured to engage the outer surface of the caster wheel and the cammed sections (100, 102) are configured to be spaced from the outer surface of the caster wheel, and thereafter, upon the caster wheel further rotating about the rotational axis, one of the cammed sections (100, 102) engages the caster wheel; characterized in that the brake shoe is pivotally coupled to the wheel support about a second pivot axis such that the brake pivots about the second pivot axis when moving from the unbraked position to the braked position.