<p>A brake block assembly (10; 50; 60) comprises a support (20; 56) and a plurality of pads (12). Each pad comprises a wheel engaging portion (14) formed from friction material and a mounting portion (15) fixed relative to the wheel engaging portion. Said support (20; 56) defines a plurality of re-entrant grooves (24; 54) arranged so that they extend parallel to one another in a direction which is parallel to the rotational axis of the wheel. Said mounting portions (15) are arranged so that each is a sliding fit in one of said grooves into which it is introduced to mount the pad on the support. The assembly also comprises locating means (16c; 15d) operative to locate each pad in its operative position relative to its groove, and fixing means (34) operative to fix said pad in its operative position.</p>
