Abstract: An inflatable barrier (10) including a wall member (12) which includes at least one inflatable element, and at least one frame member (22), the frame member (22) including a guide formation (16), the at least one guide formation (16) including a channel in which at least a part of a corresponding guide member (24), which is carried by the wall member (12), is receivable, wherein in use, at least a part of the guide member (24) is able to travel along the channel of the guide formation (16), to at least assist in erecting the wall member (16) from an inactive position to an in use position.