The present invention relates to a ramp (1) having height adjustment means for adjusting the vertical spacing between a lowermost lateral end and an uppermost lateral end. The height adjustment means comprises a down-turned lip (25) depending from the uppermost lateral end, the down-turned lip comprising at least one lip aperture (26a, 26a', 26b, 26b', 26c, 26c', 26d, 26d'). The height adjustment means further comprises a plate having at least one plate aperture. The plate is dimensioned such that when the plate is connected to the down-turned lip using connection means with the at least one plate aperture and the at least one lip aperture aligned, a contact end of the plate extends beyond the end of the down-turned lip which is distal the uppermost lateral end.
