Improvements relating to hose retainers

A hose retainer defines a channel member 2 and a sleeve formed by a pair of clasps 4 on its lower surface. In use the pair of clasps 4 are slid over the upturned tip of a wiper arm which is held within a retainer sleeve. A water supply hose is then slid into the channel of the channel part 2 (which is of a partially closed U-shaped cross-section). The hose is thus held securely against the wiper arm and can be fed to a spray nozzle mounted on the wiper arm.