A surgical clip configured to ligate tissue, the surgical clip comprising: a first leg member (102, 202, 302) and a second leg member (104, 204, 304), the first leg member having an inner surface (108, 208, 308) with a concave curvature along its length, and the second leg member having an inner surface (112, 212, 312) with a convex curvature along its length, wherein the first and second leg members are configured to move between an open configuration wherein the inner surfaces are spaced apart and a closed configuration wherein the inner surfaces are approximated; a first locking member (126, 226, 326) positioned on a distal end portion (102B, 202B, 302B) of the first leg member, and a second locking member (128, 228, 328) positioned on a distal end portion (104B, 204B, 304B) of the second leg member, the first and second locking members being configured to interact to secure the first and second leg members in the closed configuration; and a third locking member (156, 268, 392) positioned between a proximal end portion (102A, 202A, 302A) and the distal end portion (102B, 202B, 302B) of the first leg member (102, 202, 302), and a fourth locking member (158, 278, 314) positioned between a proximal end portion (104A, 204A, 304A) and the distal end portion (104B, 204B, 304B) of the second leg member (104, 204, 304), the third and fourth locking members being configured to interact to secure the first and second leg members in the closed configuration, wherein the third locking member includes an elongate member (156, 268, 390) that extends from the first leg member in an arcuate configuration and which includes a protrusion (160, 284, 392) configured to engage the fourth locking member characterised in that the protrusion is spaced from the fourth locking member in the closed configuration and in the absence of tissue. a first leg member (102, 202, 302) and a second leg member (104, 204, 304), the first leg member having an inner surface (108, 208, 308) with a concave curvature along its length, and the second leg member having an inner surface (112, 212, 312) with a convex curvature along its length, wherein the first and second leg members are configured to move between an open configuration wherein the inner surfaces are spaced apart and a closed configuration wherein the inner surfaces are approximated; a first locking member (126, 226, 326) positioned on a distal end portion (102B, 202B, 302B) of the first leg member, and a second locking member (128, 228, 328) positioned on a distal end portion (104B, 204B, 304B) of the second leg member, the first and second locking members being configured to interact to secure the first and second leg members in the closed configuration; and a third locking member (156, 268, 392) positioned between a proximal end portion (102A, 202A, 302A) and the distal end portion (102B, 202B, 302B) of the first leg member (102, 202, 302), and a fourth locking member (158, 278, 314) positioned between a proximal end portion (104A, 204A, 304A) and the distal end portion (104B, 204B, 304B) of the second leg member (104, 204, 304), the third and fourth locking members being configured to interact to secure the first and second leg members in the closed configuration, wherein the third locking member includes an elongate member (156, 268, 390) that extends from the first leg member in an arcuate configuration and which includes a protrusion (160, 284, 392) configured to engage the fourth locking member characterised in that the protrusion is spaced from the fourth locking member in the closed configuration and in the absence of tissue.