A panel system comprising: a support grid including a plurality of grid members including a first grid member; a plurality of panels each including a structural cross member extending across the respective panel, the plurality of panels including a first panel; and a connection clip for securing the first panel to the support grid, the connection clip comprising: a body including: a base having a width extending between opposing first and second lateral edges (106, 108); and first and second arms (110, 112) extending upward respectively from the first and second lateral edges (106, 108) of the base so as to form a cavity configured to receive a structural cross member of the panel; a first engagement lip extending laterally inward from an upper end of the first arm and configured to grip a first flange of a grid member of the support grid, the first engagement lip spanning a substantial majority of the depth of the connection clip; and a second engagement lip extending laterally inward from an upper end of the second arm and configured to grip a second flange of the grid member so as to secure the panel to the grid member, the second engagement lip spanning a substantial majority of the depth of the connection clip; characterised in that the structural cross member of the first panel is received in the cavity formed by the body of the connection clip, and wherein the first and second engagement lips (120, 122) of the connection clip grip respective first and second flanges (250, 252) of the first grid member so as to secure the first panel to the first grid member. a support grid including a plurality of grid members including a first grid member; a plurality of panels each including a structural cross member extending across the respective panel, the plurality of panels including a first panel; and a connection clip for securing the first panel to the support grid, the connection clip comprising: a body including: a base having a width extending between opposing first and second lateral edges (106, 108); and first and second arms (110, 112) extending upward respectively from the first and second lateral edges (106, 108) of the base so as to form a cavity configured to receive a structural cross member of the panel; a first engagement lip extending laterally inward from an upper end of the first arm and configured to grip a first flange of a grid member of the support grid, the first engagement lip spanning a substantial majority of the depth of the connection clip; and a second engagement lip extending laterally inward from an upper end of the second arm and configured to grip a second flange of the grid member so as to secure the panel to the grid member, the second engagement lip spanning a substantial majority of the depth of the connection clip; characterised in that the structural cross member of the first panel is received in the cavity formed by the body of the connection clip, and wherein the first and second engagement lips (120, 122) of the connection clip grip respective first and second flanges (250, 252) of the first grid member so as to secure the first panel to the first grid member. a body including: a base having a width extending between opposing first and second lateral edges (106, 108); and first and second arms (110, 112) extending upward respectively from the first and second lateral edges (106, 108) of the base so as to form a cavity configured to receive a structural cross member of the panel; a base having a width extending between opposing first and second lateral edges (106, 108); and first and second arms (110, 112) extending upward respectively from the first and second lateral edges (106, 108) of the base so as to form a cavity configured to receive a structural cross member of the panel; a first engagement lip extending laterally inward from an upper end of the first arm and configured to grip a first flange of a grid member of the support grid, the first engagement lip spanning a substantial majority of the depth of the connection clip; and a second engagement lip extending laterally inward from an upper end of the second arm and configured to grip a second flange of the grid member so as to secure the panel to the grid member, the second engagement lip spanning a substantial majority of the depth of the connection clip; characterised in that the structural cross member of the first panel is received in the cavity formed by the body of the connection clip, and wherein the first and second engagement lips (120, 122) of the connection clip grip respective first and second flanges (250, 252) of the first grid member so as to secure the first panel to the first grid member.