A clamp securable to an edge of a panel at an edge thereof is disclosed. The clamp comprises two clamping members that are drawn together when an elongate locating component is advanced into a space between two formations comprised in the clamping members. The formations hook around the locating component from opposite sides so that as the locating component pushes them apart, the clamping members are drawn together. Contact between the clamping members fixes the distance between clamping surfaces of the clamping members, between which the panel is held.