A hydraulic switch arrangement for incorporating into a hydraulic circuit, comprising: a first fluid switch operational in an open and closed configuration for enabling and disabling flow of hydraulic fluid through a hydraulic circuit; a second fluid switch having at least one through-passage configured to receive hydraulic fluid from the hydraulic circuit, the second fluid switch operational in a first operational configuration arranged to inhibit passage of hydraulic fluid through the through-passage , and a second operational configuration configured to permit passage of hydraulic fluid through the through-passage ; wherein the arrangement is configured such that change between the first and second operational configuration of the second fluid switch causes change in the operational state of the first fluid switch between the open and closed configuration, characterised in that the hydraulic switch arrangement further comprises a body formed with a chamber and a member disposed in the chamber for movement along a pre-determined path, the second fluid switch comprising a rotatable element having a pair of arms disposed on either side of the member such that the member impinges on one arm or the other in the event of movement in one direction or the other along the pre-determined path to correspondingly turn the rotatable element and change the operational configuration of the second fluid switch , wherein the through-passage has a mouth and wherein the through-passage tapers inwardly from the mouth; the through-passage further comprising a longitudinal axis and a cross-sectional area of the through-passage perpendicular to the longitudinal axis decreases inwardly from the mouth; wherein at least a portion of a wall defining the through-passage extending inwardly from the mouth is generally convex. a first fluid switch operational in an open and closed configuration for enabling and disabling flow of hydraulic fluid through a hydraulic circuit; a second fluid switch having at least one through-passage configured to receive hydraulic fluid from the hydraulic circuit, the second fluid switch operational in a first operational configuration arranged to inhibit passage of hydraulic fluid through the through-passage , and a second operational configuration configured to permit passage of hydraulic fluid through the through-passage ; wherein the arrangement is configured such that change between the first and second operational configuration of the second fluid switch causes change in the operational state of the first fluid switch between the open and closed configuration, characterised in that the hydraulic switch arrangement further comprises a body formed with a chamber and a member disposed in the chamber for movement along a pre-determined path, the second fluid switch comprising a rotatable element having a pair of arms disposed on either side of the member such that the member impinges on one arm or the other in the event of movement in one direction or the other along the pre-determined path to correspondingly turn the rotatable element and change the operational configuration of the second fluid switch , wherein the through-passage has a mouth and wherein the through-passage tapers inwardly from the mouth; the through-passage further comprising a longitudinal axis and a cross-sectional area of the through-passage perpendicular to the longitudinal axis decreases inwardly from the mouth; wherein at least a portion of a wall defining the through-passage extending inwardly from the mouth is generally convex. <EOS>