Abstract: A steering column assembly comprises a column part (1) rotatable in a support (7) attached to a bracket (8) which can be secured to a fixed member, a sliding connection e.g. formed by a slot (16) and pin (20) permitting movement along an axis (A) and about a pivot axis (B) perpendicular thereto to permit height and rake adjustment, and a guide e.g. formed by the peripheral edge of an aperture (17) in the slot which is engaged by a follower (31) fixed to the support (7) which defines the limits of the range of relative movement of the column part (1) thereby reducing the risk of interference with adjacent components. The follower (31) forms part of a locking mechanism (21,22,38,43) for fixing the bracket and the support in a desired relative configuration.