A mortarless retaining wall (10, 110, 210, 310) constructed of a plurality of segmental retaining wall, SRW, blocks (12, 212) stacked in an array of superimposed rows, each SRW block (12, 212) comprising: a face unit (24, 124, 224, 324) having a facing surface (20, 120, 220, 320) defining at least part of the exposed surface of the retaining wall (10, 110, 210, 310), the face unit (24, 124, 224, 324) having connectors; and one or more anchoring units (26, 126, 326) each having connectors, characterised by: the anchoring unit connectors being of complementary shape to interlock with respective face unit connectors, the face unit (24, 124, 224, 324) and each anchoring unit (26, 126, 326) forming the SRW block (12, 212) when interlocked, each anchoring unit (26, 126, 326) for confronting soil being retained by the retaining wall (10, 110, 210, 310); the face unit (24, 124, 224, 324) having first and second load bearing surfaces (30, 130, 230, 330, 34, 134, 234, 334) and first and second end surfaces (38, 138, 238, 338; 39, 139, 239, 339), the first load bearing surfaces (30, 130, 230, 330) shaped to mate with the first or second load bearing surface (30, 130, 230, 330; 34, 134, 234, 334) of a super-imposed stacked SRW block (12, 212) and resisting shear forces between surrounding SRW blocks (12, 212), the shear forces generated by soil retained by the retaining wall (10, 110, 210, 310) against the SRW blocks (12, 212); the anchoring units (26, 126, 326) each having upper and lower load bearing surfaces (32, 36) oriented in parallel and each being generally planar across the entire load bearing surfaces; the first and second load bearing (30, 130, 230, 330, 34, 134, 234, 334) surfaces of the face unit (24, 124, 224, 324) being non-planar across the entire load bearing surfaces; and the first and second load bearing surfaces (30, 130, 230, 330, 34, 134, 234, 334) and first and second end surfaces (38, 138, 238, 338, 39, 139, 239, 339) forming front edges, each edge being non-linear along the entire edge. a face unit (24, 124, 224, 324) having a facing surface (20, 120, 220, 320) defining at least part of the exposed surface of the retaining wall (10, 110, 210, 310), the face unit (24, 124, 224, 324) having connectors; and one or more anchoring units (26, 126, 326) each having connectors, characterised by: the anchoring unit connectors being of complementary shape to interlock with respective face unit connectors, the face unit (24, 124, 224, 324) and each anchoring unit (26, 126, 326) forming the SRW block (12, 212) when interlocked, each anchoring unit (26, 126, 326) for confronting soil being retained by the retaining wall (10, 110, 210, 310); the face unit (24, 124, 224, 324) having first and second load bearing surfaces (30, 130, 230, 330, 34, 134, 234, 334) and first and second end surfaces (38, 138, 238, 338; 39, 139, 239, 339), the first load bearing surfaces (30, 130, 230, 330) shaped to mate with the first or second load bearing surface (30, 130, 230, 330; 34, 134, 234, 334) of a super-imposed stacked SRW block (12, 212) and resisting shear forces between surrounding SRW blocks (12, 212), the shear forces generated by soil retained by the retaining wall (10, 110, 210, 310) against the SRW blocks (12, 212); the anchoring units (26, 126, 326) each having upper and lower load bearing surfaces (32, 36) oriented in parallel and each being generally planar across the entire load bearing surfaces; the first and second load bearing (30, 130, 230, 330, 34, 134, 234, 334) surfaces of the face unit (24, 124, 224, 324) being non-planar across the entire load bearing surfaces; and the first and second load bearing surfaces (30, 130, 230, 330, 34, 134, 234, 334) and first and second end surfaces (38, 138, 238, 338, 39, 139, 239, 339) forming front edges, each edge being non-linear along the entire edge.