A fluid pump comprising a driver having a tubular shaped body (1) defining a tube axis and a number of elements circumferentially spaced around the body (1). Each element is responsive to a signal so as to cause a corresponding portion of the body (1) to expand or contract in a direction substantially parallel to the tube axis. The pump also includes an urging member (3) positioned in the flow path and coupled to the drive such that selective expansion and/or contraction of the body (1) causes the urging member (3) to rotate, thereby urging fluid along the path.
