Improvements in formwork

A collapsible formwork element, the element including:

• a pair of opposing side wall panels each having a consistent cross sectional profile so as to allow formation via an extrusion process;
• and
• at least one connector member extending between the side wall panels, the at least one connector member having a consistent cross sectional profile so as to allow formation via an extrusion process,
• wherein the at least one connector member includes a centre portion between a pair of hinged ends provided by hinge portions in the connector member, wherein the hinged ends are engaged with the side wall panels such that the element is movable between an expanded configuration, wherein the opposing panels are spaced apart, and a collapsed configuration, wherein the opposing panels are relatively closer together, and, on expansion into the expanded configuration, the formwork element is mechanically maintained in the expanded configuration.